Chemistry Courses

A Career In Chemistry Can Take You To Heights

2011-10-07T00:56:00.000-07:00

Have you ever thought of making a career in chemistry? Does this subject actually interest you and you do not think making a career in it just because you do not have time for that. You just need to register yourself online for the course of your interest and do it online.
Chemistry is highly useful in number of fields may it be beauty, pharmaceuticals, chemistry. So why not a make a career with a very different field than the regular fields targeted be many.

With chemistry you can make a career as a:

1. Chemists
2. Chemical Scientists
3. Chemical Technician
4. Biochemist
5. Chemical Analyst
6. Criminologist
7. Perfumer
8. Food Technologist
9. Food and Drug Inspector
10.Teacher

There are so many areas which you can explore for making a lucrative career in chemistry:

• Biotechnology
• Curtin University
• Microbiology
• Wine Industry

Just choose a university for completing your online course in chemistry from number of options available here:

• Charles Sturt University
• Brunel University
• Monash University
• Curtin University
• Western Governors University
• University of Florida
• University of Maryland
• University of Bedfordshire
• Alabama Agriculture And Mechanical University

So you have so many options to take the admission in these universities and you can have it through your internet only. Just have a seat comfortably at your home and join a course online. You can even become a scientist with education in chemistry. And if you doubt on Online Education then do not be they have trained faculties to teach you this Online Chemistry Courses.

Chemistry chemical bond

2011-03-09T00:10:00.000-08:00

A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are "strong bonds" such as covalent or ionic bonds and "weak bonds" such as dipole-dipole interactions, the London dispersion force and hydrogen bonding.

Since opposite charges attract via a simple electromagnetic force, the negatively charged electrons orbiting the nucleus and the positively charged protons in the nucleus attract each other. Also, an electron positioned between two nuclei will be attracted to both of them. Thus, the most stable configuration of nuclei and electrons is one in which the electrons spend more time between nuclei, than anywhere else in space. These electrons cause the nuclei to be attracted to each other, and this attraction results in the bond. However, this assembly cannot collapse to a size dictated by the volumes of these individual particles. Due to the matter wave nature of electrons and their smaller mass, they occupy a much larger amount of volume compared with the nuclei, and this volume occupied by the electrons keeps the atomic nuclei relatively far apart, as compared with the size of the nuclei themselves.
In general, strong chemical bonding is associated with the sharing or transfer of electrons between the participating atoms. The atoms in molecules, crystals, metals and diatomic gases— indeed most of the physical environment around us— are held together by chemical bonds, which dictate the structure of matter.
In the simplest view of a so-called covalent bond, one or more electrons (often a pair of electrons) are drawn into the space between the two atomic nuclei. Here the negatively charged electrons are attracted to the positive charges of both nuclei, instead of just their own. This overcomes the repulsion between the two positively charged nuclei of the two atoms, and so this overwhelming attraction holds the two nuclei in a fixed configuration of equilibrium, even though they will still vibrate at equilibrium position. In summary, covalent bonding involves sharing of electrons in which the positively charged nuclei of two or more atoms simultaneously attract the negatively charged electrons that are being shared. In a polar covalent bond, one or more electrons are unequally shared between two nuclei.
In a simplified view of an ionic bond, the bonding electron is not shared at all, but transferred. In this type of bond, the outer atomic orbital of one atom has a vacancy which allows addition of one or more electrons. These newly added electrons potentially occupy a lower energy-state (effectively closer to more nuclear charge) than they experience in a different atom. Thus, one nucleus offers a more tightly bound position to an electron than does another nucleus, with the result that one atom may transfer an electron to the other. This transfer causes one atom to assume a net positive charge, and the other to assume a net negative charge. The bond then results from electrostatic attraction between atoms, and the atoms become positive or negatively charged ions.

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All bonds can be explained by quantum theory, but, in practice, simplification rules allow chemists to predict the strength, directionality, and polarity of bonds. The octet rule and VSEPR theory are two examples. More sophisticated theories are valence bond theory which includes orbital hybridization and resonance, and the linear combination of atomic orbitals molecular orbital method which includes ligand field theory.

Chemistry atomic structure

2011-03-09T00:09:00.000-08:00

Chemistry (the etymology of the word has been much disputed is the science of matter and the changes it undergoes. The science of matter is also addressed by physics, but while physics takes a more general and fundamental approach, chemistry is more specialized, being concerned with the composition, behavior (or reaction), structure, and properties of matter, as well as the changes it undergoes during chemical reactions. Disciplines within chemistry are traditionally grouped by the type of matter being studied or the kind of study. These include inorganic chemistry, the study of inorganic matter; organic chemistry, the study of organic (carbon based) matter; biochemistry, the study of substances found in biological organisms; physical chemistry, the study of chemical processes using physical concepts such as thermodynamics and quantum mechanics; and analytical chemistry, the analysis of material samples to gain an understanding of their chemical composition and structure.

Many more specialized disciplines have emerged in recent years, e.g. neurochemistry the chemical study of the nervous system
Chemistry is the scientific study of interaction of chemical substances that are constituted of atoms or the subatomic particles: protons, electrons and neutrons. Chemistry is sometimes called "the central science" because it connects the other natural sciences such as astronomy, physics, material science, biology and geology.
The genesis of chemistry can be traced to certain practices, known as alchemy, which had been practiced for several millennia in various parts of the world, particularly the Middle East.
The structure of objects we commonly use and the properties of the matter we commonly interact with are a consequence of the properties of chemical substances and their interactions. For example, steel is harder than iron because its atoms are bound together in a more rigid crystalline lattice; wood burns or undergoes rapid oxidation because it can react spontaneously with oxygen in a chemical reaction above a certain temperature; sugar and salt dissolve in water because their molecular/ionic properties are such that dissolution is preferred under the ambient conditions.
The transformations that are studied in chemistry are a result of interaction either between different chemical substances or between matter and energy.
Traditional chemistry involves study of interactions between substances in a chemistry laboratory using various forms of laboratory glassware.

A chemical reaction is a transformation of some substances into one or more other substances. The nature of chemical reactions a substance may undergo and the energy changes that may accompany it are constrained by certain basic rules, known as chemical laws.
Energy and entropy considerations are invariably important in almost all chemical studies. Chemical substances are classified in terms of their structure, phase as well as their chemical compositions. They can be analyzed using the tools of chemical analysis, e.g. spectroscopy and chromatography. Scientists engaged in chemical research are known as chemists. In chemistry and physics, atomic theory is a theory of the nature of matter, which states that matter is composed of discrete units called atoms, as opposed to the obsolete notion that matter could be divided into any arbitrarily small quantity. It began as a philosophical concept in ancient Greece (Democritus) and India and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of particles.
The word "atom" (from the ancient Greek adjective atomos, 'indivisible' was applied to the basic particle that constituted a chemical element, because the chemists of the era believed that these were the fundamental particles of matter. However, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called "indivisible atom" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be actually divisible, physicists later invented the term "elementary particles" to describe indivisible particles. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.
Near the end of the 18th century, two laws about chemical reactions emerged without referring to the notion of an atomic theory. The first was the law of conservation of mass, formulated by Antoine Lavoisier in 1789, which states that the total mass in a chemical reaction remains constant (that is, the reactants have the same mass as the products). First proven by the French chemist Joseph Louis Proust in 1799, this law states that if a compound is broken down into its constituent elements, then the masses of the constituents will always have the same proportions, regardless of the quantity or source of the original substance.
John Dalton studied and expanded upon this previous work and developed the law of multiple proportions: if two elements can together form more than one compound, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small integers. For instance, Proust had studied tin oxides and found that their masses were either 88.1% tin and 11.9% oxygen or 78.7% tin and 21.3% oxygen (these were tin(II) oxide and tin dioxide respectively). Dalton noted from these percentages that 100g of tin will combine either with 13.5g or 27g of oxygen; 13.5 and 27 form a ratio of 1:2. Dalton found an atomic theory of matter could elegantly explain this common pattern in chemistry - in the case of Proust's tin oxides, one tin atom will combine with either one or two oxygen atoms.

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Dalton also believed atomic theory could explain why water absorbed different gases in different proportions: for example, he found that water absorbed carbon dioxide far better than it absorbed nitrogen. Indeed, carbon dioxide molecules (CO2) are heavier and larger than nitrogen molecules (N2).
Dalton proposed that each chemical element is composed of atoms of a single, unique type, and though they cannot be altered or destroyed by chemical means, they can combine to form more complex structures (chemical compounds).
This marked the first truly scientific theory of the atom, since Dalton reached his conclusions by experimentation and examination of the results in an empirical fashion.

In 1803 Dalton orally presented his first list of relative atomic weights for a number of substances. The method was first revealed in 1807 by his acquaintance Thomas Thomson, in the third edition of Thomson's textbook, A System of Chemistry. Finally, Dalton published a full account in his own textbook, A New System of Chemical Philosophy, 1808 and 1810.
Dalton estimated the atomic weights according to the mass ratios in which they combined, with hydrogen being the basic unit. However, Dalton did not conceive that with some elements atoms exist in molecules — e.g. pure oxygen exists as O2. He also mistakenly believed that the simplest compound between any two elements is always one atom of each (so he thought water was HO, not H2O). For instance, he believed oxygen atoms were 5.5 times heavier than hydrogen atoms, because in water he measured 5.5 grams of oxygen for every 1 gram of hydrogen and believed the formula for water was HO (an oxygen atom is actually 16 times heavier than a hydrogen atom).
The flaw in Dalton's theory was corrected in 1811 by Amedeo Avogadro. Avogadro had proposed that equal volumes of any two gases, at equal temperature and pressure, contain equal numbers of molecules (in other words, the mass of a gas's particles does not affect its volume). For instance: since two liters of hydrogen will react with just one liter of oxygen to produce two liters of water vapor (at constant pressure and temperature), it meant a single oxygen molecule splits in two in order to form two particles of water. Thus, Avogadro was able to offer more accurate estimates of the atomic mass of oxygen and various other elements, and firmly established the distinction between molecules and atoms.
In 1827, the British botanist Robert Brown observed that particles inside pollen grains constantly jiggled about for no apparent reason. In 1905, Albert Einstein theorized that this Brownian motion was caused by the water molecules continuously knocking the grains about, and developed a hypothetical mathematical model to describe it.

Drill of Chemistry UN Paket C 2011

2011-02-28T13:04:00.000-08:00

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These include inorganic chemistry, the study of inorganic matter; organic chemistry, the study of organic (carbon based) matter; biochemistry, the study of substances found in biological organisms; physical chemistry, the study of chemical processes using physical concepts such as thermodynamics and quantum mechanics; and analytical chemistry, the analysis of material samples to gain an understanding of their chemical composition and structure. Many more specialized disciplines have emerged in recent years, e.g. neurochemistry the chemical study of the nervous system (see subdisciplines).

Soal Kimia UM Upi 2010

2011-02-28T11:15:00.000-08:00

No one wakes up one morning and says, "Honey, let's get married, have children, go in debt, get a divorce and be lonely the rest of our lives!" But the truth remains, nearly 50 percent of all marriages end in divorce. And who is to say the happiness level of the other half that remain married.
You don't want just any relationship - you want the right one!
We are relational beings created to connect with others. We are hard-wired for love, attention, and affection. Studies show that much of our life's well-being is directly linked to the satisfaction and success of the relationships we have with our partner, children, and co-workers. Yet, little time, if any, is taken to learn about the very subject that so often determines our day to day happiness.

The 5 C's
Chemistry, Connection, Compatibility, Communication, Commitment
A healthy relationship is like an award winning cake recipe. It takes several key ingredients to make it successful. Leave out one ingredient or sacrifice the quality of the ingredients and as hard as you try to make it work, it will never be a prize-winning cake. The same holds true in relationships.
Studies have shown that happy couples share certain relationship components, or ingredients. The more components you share the greater your odds in experiencing a successful relationship. It takes the right couple to experience chemistry and the right combination of ingredients like connection, compatibility, communication, and commitment to make a stable, healthy, long-term relationship.
Chemistry
Physical Intimacy
Norepinephrine, dopamine, and phenylethylamine are chemicals called neurotransmitters. These transmitters, when released, produce feelings of euphoria, excitement, and elation.
When you meet someone who is attractive to you, your brain triggers a response to release these "feel good" chemicals. In fact, MRI scans of the brain showed that when men and women were shown pictures of their romantic partners, areas of the brain rich in dopamine "light-up". In addition, the same area did not light up when the same subjects were shown pictures of their friends. Chemistry occurs early in the relationship. It is exciting and intense but unfortunately it is short-lived. Over time, normally lasting between a few weeks to several months, the body develops a tolerance to the neurotransmitters causing the physical passion to decline.
Chemistry is a powerful mutual attraction that brings two people together. And although it is a very important ingredient, chemistry alone is not an indicator of a good relationship. As awesome as chemistry feels, it is not a determining factor in selecting Mr. Right. If you make the mistake of allowing chemistry to be the final factor in determining whether to pursue or not to pursue the new man in your life, you might be disappointed in your relationship.
Connection
Emotional Intimacy
You could call this "old people love". When you connect with your partner on an emotional level your relationship is secure, thoughtful, mature, warm, and familiar. And the longer you are with your partner the deeper your connection.
As a couple, a man and a woman must have an emotional connection. Is your partner comfortable, happy? Can you trust one another with your thoughts, feelings, and desires?
A man must know that a woman is trustworthy and feel that she is authentic and real before he will open his heart and emotionally connect with her. Likewise, he must also possess the ability to connect with you and meet your emotional needs.
A man who is emotionally mature is a man who is capable of expressing his thoughts, feelings, and concerns. He is sensitive to your needs, supports you in a crisis, and is there when you need him. On the other hand, a man who is emotionally immature will minimize your feelings, ignore your needs, and will be inconvenienced when you need his help.
Compatibility
Opposites might attract but it doesn't necessarily make them good life partners. To be compatible means to be like minded. When it comes to relationships you need to be compatible in key areas. You need to be like-minded in your basic thoughts, ideas, and values. When you are compatible,your likeness draws you closer. When you are incompatible, your differences drive you apart. Absolutely not. However, there is less conflict when you share common thoughts concerning:
Finances
Financial disagreements will kill your chemistry and short-circuit your connection. One person cannot be frugal while the other actively acquires debt.
For the most part, men are afraid of getting hosed in relationships. Let's say Mr. Right has dated and courted you for many months. He has taken you to dinner, the movies, and bought you gifts on special occasions. The last thing he wants to do is fall in love with a woman who accepts his gifts and then charges a designer handbag on a credit card at 19.99%. If you get married, he is thinking he may very well have to pay for your Coach bag!
Likewise, if you live on a budget while Mr. Wonderful buys drinks for everyone knowing his credit cards are charged to the max then your relationship is already on shaky ground.
Friends
Successful couples report their partner as their best friend. A friend is someone you know and trust. You share affection, time, and common interests. Friends support one another in the good times and the bad. This does not mean he spends all his time with you and that he never gets to play golf, go fishing, or play poker with the guys. Likewise, while you are at work, spending time with family, or out shopping with the girlfriends you too can't wait to get home to him.

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Sense of humor
There is nothing more attractive and appealing to a man than a woman who has a sense of humor. If you can maintain the laughter and keep the conversation going in the weeks, months, and years to come, then you will not only have captured his attention, you will have captured his heart.
Basic values, etc
You may share a bed and good sex, but if you do not share basic core values you won't share much of anything else. Both partners in a relationship possess the ability to compromise in certain situations. However, when it comes to basic values there are definite boundaries if you are looking for a long-term committed partner. There is no room for compromise when it comes to lying, cheating, stealing, mental, emotional, or physical abuse. Those are deal-breakers.

Soal Kimia Um Undip 2011

2011-02-28T11:12:00.000-08:00

Refurbished and recertified chemistry lab equipment is widely available with leading distributors at reasonable prices and offer performance which is as efficient as that of new.
Budget-Friendly Choice
Chemistry lab equipment includes devices such as thermometers, chemistry analyzers, pipettes, glassware, centrifuges, hematology analyzers, sterilizers, blood gas analyzers, distillation equipment and more. By going in for high quality refurbished and recertified models of these devices, small and medium-sized laboratories can cut down their expenses. What's more, the refurbished models available with leading distributors ensure consistent performance as well as the same level of convenience and safety as new devices.

Refurbished to Meet Manufacturer Specifications
Established distributors of lab equipment offer used chemistry laboratory devices after proper refurbishment and recertification. Used devices are recertified after thorough evaluation. If defects are detected, the equipment is disassembled, parts replaced and repair carried out by highly skilled factory trained technicians in adherence to the specifications recommended by the original manufacturers. The refurbished equipment is tested repeatedly to ensure smooth functioning before it is cleaned, packed and recertified. Recertified devices are sold with extended warranty and service contracts, including material service visits and in-house service options.

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Facility to Place Online Orders
Refurbished and recertified chemistry lab devices should be purchased from reliable distributors. Online directories offer relevant information on dealers that can supply excellent recertified lab equipment at reasonable prices. Most of these suppliers maintain online stores displaying their large inventory of recertified and new products.

Soal Kimia UMB PTN 2008

2011-02-28T11:08:00.000-08:00

The recent market analysis sums up that, total UK personal debts at the end of August 2007 stood at £1,363 billion, indeed, a huge figure. The growth rate has got a surge towards 9.9% for the previous 12 months. And, the data shows an increase of £115 billion debts by this. But it is not about figures or shows. One who has unpaid loan amount can easily tell, how much problem it can create. You must have been looking for a viable solution. Debt consolidation is the process of combining all your outstanding balances and debts, credit card bills and other unpaid dues into single loan. The logic behind this says that a singular loan is far better than paying back multiple loans. Multiple loans have several different interest rates attached while single loan has got single interest rate and paying single interest rate is always preferable. Moreover the new interest rate is always lower than what you are currently paying. These programs therefore allow you to easily combat your unpaid balance problem.

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Well, when we are clogged up with debts, we generally come across a good many advisors. Security pledging is prior requirement in secured debt consolidation loans, and it is simply to put the lenders in an assured seat. Through your home or any other asset playing as the collateral, you assure the lender that his money will be paid back timely so that you can get the loan at low rate of interest and easy repayment term. You can have an amount as much as you need to meet your debts. Yet, it is always advisable to the borrowers to pay back the money within a minimum period so as to avoid paying more in the form of interest rate. Otherwise, the purpose of debt consolidation would not be served properly.

Soal Kimia UMB PTN 2009

2011-02-28T11:06:00.000-08:00

Chemistry is usually called a natural science because it is concerned with the knowledge of the natural world. Chemistry has grown up as a discipline the last 250 years. Many students regardless of the area of natural sciences they wish to pursue need an introduction to the principles and applications of chemistry as a foundation for their specialty. Organic Chemistry and Physical Chemistry plays a vital role in everyday life.
Some of the priority problems facing the human race in which chemists are expected to make significant contributions towards their solutions are listed below:

• Food Population Problems
• Environmental Protection
• Biochemical Processes
• New Sources of Energy
• New Materials
• Oceans as the source of raw materials
• New Materials

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Chemistry as a science is very much with us today and its future holds a bright promise of revealing much more to come in the future. Chemistry is a very interesting subject. Many products of the chemistry have become common household items- plastics, synthetic fibers, rubber and soaps.
Chemists in our modern society are busy with producing novel materials-wonder drugs, smart materials. Millions of people earn their living by working with the science of Chemistry. Chemistry Homework helps and Chemistry Tutoring has gained valuable importance now a days. Chemistry Tutors earn their living by working with the science called Chemistry.

Soal Kimia Snmptn 2008

2011-02-28T11:04:00.000-08:00

Team chemistry building is a process that takes time to develop. Good coaches are continually on the lookout for teaching moments that will enhance team chemistry as well as build positive character in team individuals. With that being said, there are many ways that youth sport coaches can incorporate into their coaching that leads to great team chemistry.

1. Open communication is one of the main keys to maintaining team chemistry. Coaches who clearly explain all team rules and coaching philosophy are off to a good start in developing team chemistry. 2. Coaches should devote equal time to each team member, which makes every player feel like an integral part of the team. On the other hand, coaches, who display overt favoritism to some, often create factions on teams, which is detrimental to overall team chemistry. Even young players notice when teammates may be slighted with the coach's attention or negativity and this can be detrimental to team chemistry development.
3. Youth coaches should always watch for team members who comment or act negatively towards less talented players. Coaches should not allow any negativity to be displayed from one player or group of players towards others. Additionally, coaches should keep an eye out for any negativity displayed by parents towards players, coaches or towards other parents.
4. Teams often take on the attitude of their coach. Youth coaches who display an enthusiastic, fun and encouraging style will see their team display this attitude. Happy coaches often translate into happy kids, which leads to good team chemistry.
5. Coaches should teach sportsmanship and teamwork and watch for examples of these on their team, on other teams and in the news.
6. Team members that hang out together, even when not practicing or playing, often create stronger bonds. Coaches, or a designated parent, should organize team outings away from the game itself.
7. Fun is always a key - youth sport coaches, who can make things fun for kids, have a great chance of molding teams into a cohesive unit. Fun for athletes includes: overcoming challenges, activity, positive feedback, chances to compete, knowledge, winning and having the opportunity to win.

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8. Coaches should teach the philosophy of "we." Explaining to players "we win as a team and we lose as a team" is key, as well as emphasizing the importance of each team member's contributions to the group.
9. Coaches should encourage players to "reach out" to all players so that cliques are not formed. Breaking up kids into groups with different players each practice is a good start to helping kids get to know each other.
Of course, winning teams often feel better about themselves. That should be motivation enough for coaches to the best job they are capable of to help teams win. Finally, creating an atmosphere where "kids can be kids" is important. This does not mean that coaches have to be friends with all players, but that coaches use their authority role to promote a positive experience for all, which leads to team chemistry.

Soal Kimia Snmptn 2009

2011-02-28T11:02:00.000-08:00

As a premed student I entered organic chemistry with some level of anxiety. This seemed to be the course that I had heard thinned the ranks of prospective physicians by getting a poor grade or failing. For me it was a generally enjoyable course, and I went on to major in chemistry, and did most of my advance course work in organic chemistry. Organic chemistry is really carbon chemistry. This is because the carbon atom is the backbone of all living creature's molecules.

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Carbon is an interesting element in that it has 8 protons and 8 electrons. In the simple Bohr model of thinking of electron levels, the innermost level has 2 electrons. Then next level has 8 electrons, of which 6 are filled with the electrons of the carbon molecule. This leaves two places empty, and so allows carbon molecules to easily form chains where two carbon to carbon molecules share one of their outer level electrons in a C-C bond. Hydrogen molecules which have a single electron in the innermost level that can accommodate 2 electrons often in nature binds with carbon molecules by sharing their electron with a carbon molecule to form a C-H bond. In this way chains of carbon molecules with C-H bonds occupying most of all of the available electron levels can from molecules called hydrocarbons.
Hydrocarbons in chains and often in 5 or 6 carbon loops make up many of the skeletons of the molecules in living organisms. Oxygen molecules are often incorporated, either as -OH moieties or a double bonded C=O bonds less commonly form most of the other covalent bonds in living organisms. Other elements like phosphorous, sulfa and nitrogen play key roles, but in organic chemistry there were definitely fringe players.
A solid understanding of the nomenclature and properties of carbon chemistry was the key to success in the basic organic chemistry courses. It was a great framework for understanding biochemistry and the basic science work of med school too.
Building team chemistry is always a challenge for youth sport coaches. Trying to mold numerous personalities and different skill- level athletes into a cohesive unit is difficult, even for professional and college coaches. Expecting, often-untrained youth coaches to create great team chemistry can be asking a lot. The good news is that youth sport coaches do not have to deal with oversized egos or over paid athletes that college and professional coaches have to deal with. The bad news is that youth coaches have to deal with over-zealous parents that can put a thorn into building great team chemistry. Often, it only takes one uncooperative player or parent to disrupt team chemistry.

Soal Kimia Snmptn 2010

2011-02-28T10:58:00.000-08:00

Just have a seat comfortably at your home and join a course online. You can even become a scientist with education in chemistry. And if you doubt on Online Education then do not be they have trained faculties to teach you this Online Chemistry Courses.
Organic Chemistry is the most interesting and easy to learn subject of all the sciences. However a lot of students find it daunting. The fear of Organic chemistry pervades from a lack of understanding of the subject which itself stems from a incorrect approach to learning the subject.
There are two basic steps in learning organic chemistry - Reasoning and Practice. Some of the basic considerations that go into learning chemistry are as follows:
Organic Chemistry is Not Tough: Organic chemistry is not tough at all. This subject needs more practice and if you are comfortable in writing and identification of compounds from different structural notations, I am sure that it will provide you with a good start. Remember that 40 percent of organic chemistry is done if you are good at identification of structural formulae or writing the structures.
Don't Just Read it - Practice it: You can clear your concepts only by doing questions. For example, Carbocations concept governs the preferred product formation in many a reactions. Every book has a detailed explanation of the meaning and stability of the carbocations. Understanding the concept of order of stability is very simple and straightforward, However the problem occurs when you start to apply the concepts to the problem. Identification of different types of carbocations becomes easy only after you have practiced different questions based on it.
Breakup Your Chapter Into Small Topics: For example, Writing Lewis Structures, Resonance, Tautomerism etc. You need not cram the language given in the book, Read the topics thoroughly to understand them. What is important is to practice the rules by doing questions based on the notes. You can rest assured that no professor would ask you to list out the rules during the exam - but applications of the rules forms the favorite questions of many a professors. They may also appear in the True / False statements but they can be attempted very well if the topic has been understood well by you.
Understanding The Organic Reactions To Master Them: Organic reactions can only be mastered by understanding them. Every atom behaves in a reaction with a strong reason. It is therefore important to understand the reason behind every reaction. For example, in the case of Markovnikov's rule, you may try to memorize it - you may also succeed in learning it by heart. Master The Reactions By Practising With Different Examples: My advice is to practice at least ten examples from each reaction in order to master it. If you practice 10 different examples of the reaction, the reaction will get engraved in your memory as a cis addition of Hydrogen on the double bond. Any time later when you come across this reaction, believe me, the reaction will snap back to you right away.

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Exceptions Or Awkward Behaviors: In organic chemistry, like in every part of life, there are a few exceptions or awkward behaviors of some of the molecules.- Thank God there are only a handful of them. You will find every book provides a detailed explanation for their exceptional behavior. Just understand the reasoning behind it and the exception will no longer appear a exception to you.

Soal Kimia Simak UI 2009

2011-02-28T10:56:00.000-08:00

A chemical substance is a kind of matter with a definite composition and set of properties. Most of the substances we encounter in our daily life are some kind of mixture; for example: air, alloys, biomass, etc.
Nomenclature of substances is a critical part of the language of chemistry. Generally it refers to a system for naming chemical compounds. Earlier in the history of chemistry substances were given name by their discoverer, which often led to some confusion and difficulty. However, today the IUPAC system of chemical nomenclature allows chemists to specify by name specific compounds amongst the vast variety of possible chemicals. The standard nomenclature of chemical substances is set by the International Union of Pure and Applied Chemistry (IUPAC).

There are well-defined systems in place for naming chemical species. Organic compounds are named according to the organic nomenclature system. In addition the Chemical Abstracts Service has devised a method to index chemical substance. In this scheme each chemical substance is identifiable by a number known as CAS registry number.
Have you ever thought of making a career in chemistry? You just need to register yourself online for the course of your interest and do it online.
Chemistry is highly useful in number of fields may it be beauty, pharmaceuticals, chemistry. So why not a make a career with a very different field than the regular fields targeted be many.

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With chemistry you can make a career as a:
Chemists
Chemical Scientists
Chemical Technician
Biochemist
Chemical Analyst
Criminologist
Perfumer
Food Technologist
Food and Drug Inspector
Teacher
There are so many areas which you can explore for making a lucrative career in chemistry:
Biotechnology
Curtin University
Microbiology
Wine Industry
Just choose a university for completing your online course in chemistry from number of options available here:
Charles Sturt University
Brunel University
Monash University
Curtin University
Western Governors University
University of Florida
University of Maryland
University of Bedfordshire
Alabama Agriculture And Mechanical University

Soal Kimia Simak UI 2010

2011-02-28T10:52:00.000-08:00

In total, 118 elements have been characterized as of March 2010, and new elements of higher atomic number are "discovered" from time to time, as new synthetic products of artificial nuclear reactions. Of the known elements, the first 92 occur naturally on Earth. Of these, oxygen is the most abundant element in the Earth's crust. About 80 elements have stable isotopes: namely all elements with atomic numbers 1 to 82, except elements 43 and 61 (technetium and promethium). About half of the 80 stable elements are expected to be radioactive with such long half lives that their decay happens only in theory, and is too slow to have yet been detected by experiment (see the list of nuclides). These elements (such as bismuth, only recently measured as unstable) have half lives at least 100 million to 1000 million times longer than the estimated age of the universe.

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Elements with atomic numbers 83 or higher (bismuth and above) are unstable to the point that their instability has been detected, and they undergo radioactive decay. The elements from atomic number 83 to 94 are composed entirely of radioactive isotopes. Other radioactive elements continue to be produced in natural processes, such as production by cosmic rays, or as shorter-lived daughter nuclides or transmutation products from natural decay of longer-lived radioactives.
When two distinct elements are chemically combined, with the atoms held together by chemical bonds, the result is termed a compound. Chemical compounds may result in elements combined in exact whole number ratios of atoms (a familiar example is water). The term "compound" does not always imply an exact combination ratio, however, inasmuch as chemical bonding of many types of elements results in crystalline solids and metallic alloys, for which exact formulas do not exist. Most of the solid substance of the Earth is of this latter type: the atoms that are present in the substance of the Earth's crust, mantle, and core are combined into chemical compounds of many compositions, but these do not have precise empirical formulas.

Soal Kimia UN SMA 2008

2011-02-28T10:47:00.000-08:00

The word chemistry comes from the earlier study of alchemy, which is a set of practices that encompasses elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism and medicine. Alchemy in turn is derived from the Arabic word "كيمياء" meaning "value"; it is commonly thought of as the quest to turn lead or another common starting material into gold. Many believe that the Arabic word "alchemy" is derived from the word Chemi or Kimi, which is the ancient name of Egypt in Egyptian. The Arabs added the Arabic definite article "al" to the word, resulting in the word "الكيمياء" (al-kīmiyā). Thus, an alchemist was called a 'chemist' in popular speech, and later the suffix "-ry" was added to this to describe the art of the chemist as "chemistry".

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A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. Common examples of elements are iron, copper, silver, gold, hydrogen, carbon, nitrogen and oxygen.
Save for the hydrogen and helium in the universe, which are thought to have been mostly produced in the Big Bang, most chemical elements are thought to have been produced by later processes.

Soal Kimia UN SMA 2009

2011-02-28T10:46:00.000-08:00

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These include inorganic chemistry, the study of inorganic matter; organic chemistry, the study of organic (carbon based) matter; biochemistry, the study of substances found in biological organisms; physical chemistry, the study of chemical processes using physical concepts such as thermodynamics and quantum mechanics; and analytical chemistry, the analysis of material samples to gain an understanding of their chemical composition and structure. Many more specialized disciplines have emerged in recent years, e.g. neurochemistry the chemical study of the nervous system (see subdisciplines).

Theory of Chemistry UN SMA 2011

2011-02-20T07:35:00.000-08:00

Chemistry (the etymology of the word has been much disputed is the science of matter and the changes it undergoes. The science of matter is also addressed by physics, but while physics takes a more general and fundamental approach, chemistry is more specialized, being concerned with the composition, behavior (or reaction), structure, and properties of matter, as well as the changes it undergoes during chemical reactions. Disciplines within chemistry are traditionally grouped by the type of matter being studied or the kind of study. These include inorganic chemistry, the study of inorganic matter; organic chemistry, the study of organic (carbon based) matter; biochemistry, the study of substances found in biological organisms; physical chemistry, the study of chemical processes using physical concepts such as thermodynamics and quantum mechanics; and analytical chemistry, the analysis of material samples to gain an understanding of their chemical composition and structure. Many more specialized disciplines have emerged in recent years, e.g. neurochemistry the chemical study of the nervous system (see subdisciplines).
The word chemistry comes from the earlier study of alchemy, which is a set of practices that encompasses elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism and medicine. Alchemy in turn is derived from the Arabic word "كيمياء" meaning "value"; it is commonly thought of as the quest to turn lead or another common starting material into gold. Many believe that the Arabic word "alchemy" is derived from the word Chemi or Kimi, which is the ancient name of Egypt in Egyptian. The Arabs added the Arabic definite article "al" to the word, resulting in the word "الكيمياء" (al-kīmiyā). Thus, an alchemist was called a 'chemist' in popular speech, and later the suffix "-ry" was added to this to describe the art of the chemist as "chemistry".

A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. Common examples of elements are iron, copper, silver, gold, hydrogen, carbon, nitrogen and oxygen.

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Save for the hydrogen and helium in the universe, which are thought to have been mostly produced in the Big Bang, most chemical elements are thought to have been produced by later processes.
These processes are divided into:
cosmic ray spallation (important for lithium, beryllium and boron, though some of these may have formed in the Big Bang), and
stellar nucleosynthesis which produces all elements heavier than boron (with carbon being the first of this series). The very heaviest elements (those beyond element 94, plutonium) decay with half lives too short to allow them to be observed naturally on Earth.
In total, 118 elements have been characterized as of March 2010, and new elements of higher atomic number are "discovered" from time to time, as new synthetic products of artificial nuclear reactions. Of the known elements, the first 92 occur naturally on Earth. Of these, oxygen is the most abundant element in the Earth's crust. About 80 elements have stable isotopes: namely all elements with atomic numbers 1 to 82, except elements 43 and 61 (technetium and promethium). About half of the 80 stable elements are expected to be radioactive with such long half lives that their decay happens only in theory, and is too slow to have yet been detected by experiment (see the list of nuclides). These elements (such as bismuth, only recently measured as unstable) have half lives at least 100 million to 1000 million times longer than the estimated age of the universe.
Elements with atomic numbers 83 or higher (bismuth and above) are unstable to the point that their instability has been detected, and they undergo radioactive decay. The elements from atomic number 83 to 94 are composed entirely of radioactive isotopes. Other radioactive elements continue to be produced in natural processes, such as production by cosmic rays, or as shorter-lived daughter nuclides or transmutation products from natural decay of longer-lived radioactives.
When two distinct elements are chemically combined, with the atoms held together by chemical bonds, the result is termed a compound. Chemical compounds may result in elements combined in exact whole number ratios of atoms (a familiar example is water). The term "compound" does not always imply an exact combination ratio, however, inasmuch as chemical bonding of many types of elements results in crystalline solids and metallic alloys, for which exact formulas do not exist. Most of the solid substance of the Earth is of this latter type: the atoms that are present in the substance of the Earth's crust, mantle, and core are combined into chemical compounds of many compositions, but these do not have precise empirical formulas.

Download Soal UN Kimia 2010

2011-02-16T12:44:00.000-08:00

It may be fascinating to delve into the realms of chemistry and unravel its many mysteries, but it's certainly not the easiest of subjects to master. It requires focus, dedication and daily studying to keep up with this complex science. Besides the subject matter that is taught in classrooms, some extra help in understanding and learning chemistry is always welcome.

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IPA Program

Traditionally, the only way to glean extra information on any topic was to visit one of the bigger libraries and browse through huge tomes dealing with the subject. Now, with the click of a mouse, you can find out anything you need to in chemistry, whether it is information on Electro- chemistry or Organic Chemistry; Nuclear Reactions or Chemical Reactions, Thermodynamics or Equilibrium.
There are numerous online sites that provide in-depth information and tutorials on any of the various topics that are included in chemistry. Online encyclopedias are great if you are looking for static information on chemistry.
However, here are a couple of ways to get inter-active help on any question you may want to get answers to.
Chemistry Help Forums
Using a forum is one of the most innovative ways of getting help with chemistry online. You can enter most chemistry forums as a guest and read any of the questions and answers posted there. However if you want to post a question or answer a query you would need to register as a member. One of the most exciting things about using a forum for getting help with chemistry online is that your question goes out to a large number of people. Varied answers to your question can open up your mind to endless possibilities. And further discussions with other members can only help enhance your learning experience.
You can choose to post your question in a General Chemistry forum or you could choose one of the several specialized forums including Organic Chemistry Forum, Analytical Chemistry Forum or Inorganic Chemistry Forum.
Chemistry e-Tutor
Registering at an online site that has chemistry tutors to help you out is another way to get help with chemistry online. Online tutors do not just give you outright answers to your questions; they help you learn just like conventional tutors.
The convenience of logging in at any time from anywhere, which is great for students who are unable to attend school temporarily or those who tend to travel a lot due to career or family demands.
Tutorials are more than just question-and-answer sessions. They impart knowledge, build learning skills and teach students to explore additional resources that can enhance the impact of their lessons.

Chemistry Exercises for Unsoed

2011-02-15T08:42:00.000-08:00

Although it has been drummed into the teachers' heads to persevere in educating their students and not give up, at times you feel you are banging your head on a wall. By going back to school to earn a PhD in Chemistry may open up new possibilities. Remember that for every door closed, a window is thrown open.
Many abbreviations have been thrown about regarding the PhD term. Perhaps the one regarding Permanent Head Damage may suit those who exhibit odd mannerisms, put down as eccentricities of the overly smart. Whichever way the coin drops, let's face the obvious. Having a PhD tagged to the end of your name, whether on your business card or signage on your office door, injects an air of prestige. To rub shoulders with the elite group of academics, a Chemistry doctorate degree is an essential element in getting accepted into tightly guarded circles.

Chemistry Exercises for SPMB Unsoed Examination

In the event you are persuaded to look at brochures for PhD in Chemistry, check for institutions which offer full or near full financial aid. Most of the time, those pursuing a Master's degree lose out in this area of subsidy whereas PhD candidates get to enjoy free tuition. Although the norm is for candidates to possess a Master's degree as a pre-requisite to getting accepted into the PhD program, some institutions allow those with Bachelor's qualifications the option of direct entry. This is assuming you have sufficient years of experience in the field of Chemistry.
Upon attainment of your Chemistry doctorate degree, you are now presented with a wider choice of career options. Whether you choose to return to the humdrum of your previous job or teach in a better school, you can also step into the world of development and research. With the correct credentials, knowledge and experience in hand, most academic establishments such as universities and colleges welcome PhD holders with open arms. They also prefer to fill management positions with these candidates. Organizations who specialize in research work also improve their corporate image and standing if their top positions are brimming with PhD intellects. Since you have broken the glass ceiling, this equates to better reimbursement in the financial sense.

Chemistry Exercises for UMB PTN

2011-02-15T08:41:00.001-08:00

Attraction between atoms or ions leads to a chemical bond. According to the types of bonds contained in a molecule, the physical properties including melting point, hardness, electrical and thermal conductivity and solubility are determined. Chemical bonds involve only the outermost or valence electrons of atoms. Using the example of the simplest element, hydrogen, its two atoms on approaching each other, cause electon-electron and proton-proton repulsions to attempt separation of the atoms. But counterbalance by proton-electron attraction fuses the two hydrogen atoms forming a bond.

Chemistry Exercises for UMB PTN Examination

This example demonstrates the gain, loss and sharing of electrons by atoms for possession of the same number of electrons as the noble gas in closest proximity on the periodic table. With eight valence electrons (s2p6), all noble gases are chemically stable in a phenomenon called the octet rule. BeH2 has just four valence electrons around Be, with Beryllium contributing two electrons and each hydrogen with one. The second exception applies in elements in periods 4 and above. Their atoms can have over four surrounding valence pairs in certain compounds.
Types of Chemical Bonds
Familiarity with three types of chemical bonds is required for the SAT II Chemistry exam, ionic bonds, covalent bonds and metallic bonds.
Ionic Bonds
An electrostatic attraction between ions with opposite charges, cations and anions causes ionic bonds. They usually involve metals and nonmetals as elements active in ionic bonds are mostly from opposite ends of the periodic table with an electronegativity difference exceeding 1.67. Being very strong, ionic bonds in compounds increase melting points and take a solid form in normal conditions. Finally, an electron in an ionic bond is transferred from the less electronegative atom to the more electronegative element. A prime example of an ionic bond-content molecule is NaCl or table salt.
Covalent Bonds
Atoms may share electrons instead of transferring them from atom to atom, resulting in covalent bonds. But the sharing is rarely ever equal due to the difference in electronegativity value of each atom. The only exception is the bond between two atoms of the same element. Covalent bonds are said to be non-polar when the difference in electronegativity of two atoms ranges from 0 to 0.4. Polar refers to electronegativity difference between 0.4 and 1.67. For both non-polar and polar covalent bonds, higher electronegativity in an element results in stronger attraction of the electron pair. Carbon dioxide, CO2 molecules have two bonds which are covalent bonds.
A single bond occurs when only one pair of electrons is shared. This single bond is a sigma bond with the electron density being most pronounced along the line joining the two atoms.
Metallic Bonds
Metallic bonds are exclusive to metals alone, including aluminium, gold, copper and iron. Each atom in a metal shares a bond with a number of other metal atoms, thereby allowing their electrons unrestricted movement within the metal structure. That basically sums up the essence of chemical bonds, the differences in various types and the reasons for molecular structures being formed.

Chemistry Exercises for Undip

2011-02-15T08:41:00.000-08:00

Whenever you read a news article about a breakthrough in the medical world, the latest wonder drug or the progress of a flu, a biostatistician had his or her hands in it. A biostatistician is a type of statistician who specializes in the medical and health care field. They are responsible for analyzing clinical or survey data using statistical approaches, applying research or simulation results to extend biological theory or recommend new research projects and provide statistical consultation to clients or colleagues.

Chemistry Exercises for UM Undip Examination

In other words, if some form of research requires sampling the population for a result, a biostatistician will decide how data is collected and how large a sample they need. They then actually design the test procedure, analyze what they collected and report the results. This procedure can be applied to testing a new drug for dangerous side effects to determining how far a disease has spread over the world.
Those interested in entering the field need strong high school grades in biology, chemistry and especially mathematics. For their undergraduate program they should look for on campus or online colleges with top statistical departments and be ready to devote most of those four years on learning its basic theories.
Due to the scarcity of the number of applied mathematicians in the working world, finding employment should not be too difficult if one graduates with solid grades. The main organizations hiring statisticians are drug and other health-related manufacturers, research hospitals, government agencies and universities. Now it's time to focus on one's post-graduate education. While it's encouraged to take basic chemistry and biology during one's undergraduate years, one starts to truly concentrate on relevant health-related courses here along with not forgetting more advanced statistical principles. This is where many post-grads usually leave their campus behind and go to full online education. Entry level positions start in the $30,000 range. The Bureau of Labor Statistics estimates there are somewhere slightly over 20,000 biostatisticians in the working U.S. Because of their rarity and the importance of their work, average salary is estimated to the $70,000 range. The top 10% earns well into the $120,000 range. Those with PhD's who work on highly critical research are known to earn considerably more.
What must always be remembered is no form of medical or health care research, whether in the lab or out in the field, is considered valid unless the numbers back it up. While many top research scientists can crunch their share of numbers, they still need the biostatistician to do the final confirmation of their results. Therefore, as long as there is anything from testing the latest version of a flu vaccine to finding a true cure for cancer, there will be work for these professionals.

Chemistry Exercises for UPI

2011-02-15T08:40:00.000-08:00

To select the best, colleges follow rigorous screening procedures that help detect the cream.
Prerequisites for Top Medical Colleges
The first prerequisite for getting admission in top colleges is to score well in subjects such as general biology, chemistry, physics and calculus. Candidates can enroll themselves in pre-medical schools to enhance their prospects. Other requirements for getting into the top medical colleges are:

Chemistry Exercises for UM UPI Examination

High Grade Point Average (GPA): Most of the colleges require candidates to attain at least 3.5 GPA for applying. That is, getting into top medical colleges would require a higher GPA. Whatever their preference, candidates must always strive for the best achievable scores.
Understanding the field closely: To experience what you will be doing in your future, candidates can volunteer at a clinic or hospital and learn from a doctor while assisting him. Assist in research to gain practical experience. This experience will help the candidate take informed decision regarding their choice of career.
Medical College Admission Test (MCAT): Prepare for the MCAT, a computer-based exam, with the help of preparation books and classes. This test has four sections i.e. biological and physical sciences, and writing sample and verbal reasoning.
A candidate's selection into the best colleges is decided by the MCAT, Science GPA and overall GPA.
Top Medical Colleges in the US
The US News & World Report released the names of top ten US medical colleges. The best colleges in the field of research are Harvard University, Johns Hopkins University, University of Pennsylvania, University of California-San Francisco and Duke University. The best ones for primary care are University of Washington, University of North Carolina-Chapel Hill, Oregon Health and Science University and Michigan State University College of Osteopathic Medicine, among others. Although the cost of studying in different top colleges may vary, they are invariably expensive.

Chemistry Exercises for UI

2011-02-15T08:39:00.000-08:00

The crime investigation team is a group of people who solve different crimes and place behind bars the person who go against the law. Sometimes, it would take a long time for them to unravel the truth of what happened because they need to gather strong evidences to solve the case. However with the cooperation of different departments, justice is served. One of the people behind the enforcement of law is the forensic scientist. If you want to become one, follow these tips.

Chemistry Exercises for Simak UI Examination

The first thing that you must do is to try learning about what the tasks of a forensic scientist are. Through this you will have an idea whether it suits your interests and of course your skills. If you watch some movies, you will see some of the work of this kind of people like doing a field investigation and laboratory work. This is just part of their work and you need to read from more resources about other things.
If you are still in high school and you plan to get a forensic science degree in college then you have to strengthen your foundation when it comes to certain subjects in science so that it would be easier for you once you go to college. Be attentive in your Chemistry and Biology classes and gain enough knowledge on these subjects as much as you can. Try to search for the different forensic science colleges. Ask around whether there are schools that offer this kind of program. If you have none locally, you can search for programs that are offered online so that you will have a list of the possible options when it comes to the school that will provide you with the proper training and education. Contact the American Academy of Forensic Science for reliable facts on schools.
Once you have chosen from the great number of forensic science schools, your next move must be to ask about the costs for learning. If you can get financial aid, go for it and pass the necessary requirements and documents. There are different ways wherein you can avail education even if you do not have enough money. Talk to a career adviser or simply ask yourself where you are good at. Forensic science degree can be divided into different specializations and you have the chance to focus on one field which you find very interesting. You can just work on the laboratory or you can focus on investigating the crime scene. You can pursue your desire to enforce the law and help solve crimes by being a forensic scientist. However, just like in any areas, you must possess the necessary education and skills to be effective in what you want in life.

Chemistry Exercises for SNMPTN Package 4

2011-02-15T08:30:00.001-08:00

Chiropractors are a type of medical doctor that may make a diagnosis and overcome health problems that may be linked towards the nervous or musculoskeletal system. It really is assumed that when the spinal joints aren't aligned right it is going to bring forth other health conditions in the nervous system. Whenever this occurs their immune system won't be able to fight off diseases.

Chemistry Exercises for SNMPTN Examination

If you are interested in studying about inventive medical and complementary treatments, and you've been dreaming of entering the sector of chiropractic medicine, then a New York Chiropractic College (NYCC) could be able to help you together with your academic and vocation activities. Before using pupils must be conscious of your prerequisites suitable for enrollment that includes: a minimum of ninety undergraduate hours, one of them a year of general biology, chemistry, organic chemistry and physics using labs.
Utilizing this unique college can take you 5 years. This may sound like a big commitment - however the qualifications you earn will be well worth it. According towards the U.S. Bureau of Labor Information, job prospects are anticipated to be good for people with this job field and could make as much as $100,000 annually.
With the ever increasing recognition in this field, chiropractic educational institutions are leading the best way in alternative medicinal drugs by educating the best standards in chiropractic tutoring. Successful graduates may easily anticipate profitable income and a productive occupation sector as employment expansion in this discipline is expected to be very positive.
There are a number of things that you need to learn with this profession - but once you do it will be well worth it.

Chemistry Exercises for SNMPTN Package 3

2011-02-15T08:30:00.000-08:00

Are you considering Plastic Surgery as a career? You can have an amazing career if you can persevere along this long road. These are the steps needed in order to attain success in a plastic surgery residence course.

Know the work of plastic surgery. Before deciding to study for plastic surgeon or apply to any of the residency programs, it's a good idea to know what you're considering getting into. Doctors trained in reconstructive surgery are primarily known as plastic surgeons. They work with people who have chosen or who need to correct their appearance. Various body parts may need to be reconstructed, perhaps as a result of accident, burns, or attacks.

Chemistry Exercises for SNMPTN Examination

Good academics should be your priority. Do you like the job description of a plastic surgeon? Before applying to a residency program, make sure you have reviewed the requirements to increase the chance to be accepted. First and foremost, you have to prepare for the plastic surgeon in high school. Put your attention into math and science classes. Your local junior college probably offers courses that can prepare you for med school. You may want to do some rounds with a plastic surgeon to check out what the field is all about.

After achieving your high school diploma, it is important to earn your bachelor's degree. You'll need a medical degree if you want to pursue this field. A higher GPA will definitely improve your chances of med school acceptance. You should make sure to take pre-med classes in college. Chemistry, biology, and physics are classes and knowledge that you will need (Also consider organic chemistry and also include some liberal arts).

Fill out your application early for medical school. Begin the application process to medical schools as soon as you have completed the MCAT. Normally the students begin to do this in their junior year of college or university. Check out what you will need in order to get accepted into med school. Competition is very hard! Also, you will have a stronger medical school application if you volunteer in medical environments. If this applies, you might want to get into a plastic surgery office where volunteer work can help you.

Prepare and do well in medical school. In order to join into med school one should achieve high grades. The course load is again based on the scientific subjects. At the end of med school, you'll start on clinical rotations in any and all specialties (and it's not only reconstructive surgery). For a plastic surgeon, all training is helpful. You should take the USMLE at the starting of your second year of medical school (US Licensing Exam for Doctors). Work tirelessly since the various phases of this examination need plenty of groundwork.

Plastic surgery residency. Lastly, submit an application to a plastic surgery residency program. A plastic surgery residency program can be applied to after many years of medical schooling. You will graduate from medical school as a doctor of medicine, after which you will be expected to undergo a residency course. There are two paths you can take when you are applying for and completing your residency. Residency for the first three years follows a general path. While in your fourth or fifth year of residency you can at last be a plastic surgeon specialist.

Using the integration model, you can begin residency as a plastic surgeon immediately upon graduating med school. A residency typically lasts 5-6 years under a director of the plastic surgery program. You'll have to spend a year as chief resident to finish off the residency.

You should then take the exams given by the national board. Write the national board exams in plastic surgery which would be your last task to be certified as an authorized plastic surgeon. Plastic surgeons can then get their state licenses. Your residency will feel incredibly long, and you may feel like your pay is low, but don't get yourself down.

Chemistry Exercises for SNMPTN Package 2

2011-02-15T08:29:00.001-08:00

Often I am asked how much a medical school admissions officer will emphasize a student's grades in organic chemistry when assessing a candidate for admission. In 2006, almost 40,000 students applied to medical school, of which less than 45% were accepted. The average applying student had a GPA of almost 3.5 and MCAT score of 27.6, while the average matriculating student had a GPA of 3.64 and an MCAT score of 30.4. Thus, it is obviously a very competitive endeavor. First, it must be acknowledged that the grade itself that one receives in organic chemistry will be duly noted be the admissions official and that an "A" will impress the most. In addition, the student's organic chemistry laboratory grade will also weigh in the admissions process. These grades are not just a part of your GPA, but are also a larger part of the "science GPA", which is also closely scrutinized by med schools.

Chemistry Exercises for SNMPTN Examination

Yet, organic chemistry could play a much greater role in medical acceptance than just a letter grade or part of a GPA. The oft-forgotten role that organic chemistry plays in medical school admissions is in the Medical College Admissions Test (MCAT). The MCAT is separated into four sections (Physical Science, Verbal Reasoning, Writing Sample, and Biological Science) and has a perfect score of 45. While organic chemistry falls under the physical science section, what is not definitive is the amount of organic chemistry that the will comprise the section. The actual composition of the physical science section varies from exam to exam and could possibly be concentrated in organic chemistry. Should a student encounter a section heavy in organic chemistry, that student's grade in the course is going to be far less important than the effect it will have on the MCAT score. Thus, knowledge of organic chemistry is more essential to medical school admissions than just obtaining a good grade.
Studies have conclusively shown that students who have a better grasp on organic chemistry going into the MCAT are more likely to score higher on the exam and get into to medical school. We have found that the most efficient way to obtain that grasp is through comprehensive review courses. One of those is offered by a company called AceOrganicChem, which can be found at Organic Chemistry.
For more information on organic chemistry and the MCAT, or to get organic chemistry help and tutoring, I strongly recommend visiting Organic Chemistry.

Chemistry Exercises for SNMPTN Package 1

2011-02-15T08:29:00.000-08:00

Is it possible for a homeschool to provide high school science that will be acceptable to the colleges? My boys had biology, chemistry and physics at home, all with science labs, without any outside help from schools or co-ops. Not only did the colleges accept our science records, they also offered us great scholarships, including two full-tuition scholarships at my son's first choice university!

Chemistry Exercises for SNMPTN Examination

In our homeschool, we had "Biology with Lab" on the transcript. I gave course descriptions for colleges. The course description was a paragraph long, and described how we taught biology. Much of the information I got from the catalog description of the textbook we used. I wrote a list of the labs that we did, using the list from the book's table of contents. I demonstrated my grading criteria, carefully showing every chapter grade, and a grade for every lab write-up my children completed. That gave the colleges a thorough explanation of exactly what our transcript meant when it said "Biology with Lab." I saved all the tests and all the lab write-ups, in case a college would ask for a sample of their work (some did!).
We did all our work in all our sciences at home by ourselves. I just graded tests and looked at the lab write ups. (If the lab write up made sense to me, they got 100% - if it didn't make sense to me, they got something less.) Although I do understand biology and chemistry, they did most of that work on their own as well.
Many (even most) colleges will accept lab sciences done at home. For example, the University of Washington wants "proof" of science. That's why they prefer the ACT test. The ACT covers more than reading, writing and math. It covers science as well. They accept the ACT test as "proof." They also accept SAT 2, AP, and community college lab sciences as "proof." But the University of Washington is in the minority, because most colleges don't have additional requirements. The UW policies have also changed a lot over time. If your child is interested in ANY college, it's a good idea to check their policies every year, because they can change dramatically.

Chemistry Exercises for SMA UN Exam Pack 1

2011-02-13T09:49:00.000-08:00

If you are, you will need quality high school lab equipment with which to equip your high school chemistry lab. This will entail obtaining high quality glassware, personal protective equipment and the right chemistry textbooks for the job. What would a well equipped high school chemistry lab have so as to be equipped properly? Professional Chemistry Lab Sets.

Chemistry Exercises for SMA UN Exam - Natural Science Program

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Download Questions, Download Solutions

A professional chemistry lab set would include a variety of items such as: Electronic Digital Balances for weighing our materials used in reactions, Test Tubes for combining small amounts of reactants for easily observable lessons, Support Stands With Cast Iron Bases for setting up glassware used in experiments, Cast Iron Support Rings to assist in this function, Buret Clamps also to assist in this process, Wire Gauze and Bunsen Burners to setup up for boiling and effecting reactions and digestions, Porcelain Crucibles With Lids for oxidation reactions and evaporation of hydrates and solvents, Glass Graduated Cylinders for measuring liquids, Shaped Separatory Funnel With Glass Stopper for extractions, Volumetric Flasks for solution preparation, Graduated Glass Beakers to measure and as reaction vessels, Glss Laboratory Thermometers to track liquid temperatures, Poly Wash Bottles to keep everything rinsed and clean, Assorted Diameter Rubber Lab Tubing for pulling a vacuum, Glass Tubing for fashioning custom glass tubing setups, Dropping Pipets (medicine droppers) for measuring out small amounts of liquids, Glass Stirring Rods for facilitating mixing, Test Tube Clamps, Crucible Tongs and Beaker Tongs to hold test tubes, crucibles and beakers, Stainless Steel Forceps to handle hot and reactive materials, a Spatula that is Stainless Steel for measuring reactants, a Clay Pipe Triangle to hold a crucible, Weighing Canoes for measuring on the mass balance as well as Rubber Stoppers.
PPE. PPE stands for Personal Protective Equipment. PPE is essential to a complete set of high school lab equipment. When working in a lab, protection for you eyes, skin and respiratory system is absolutely necessary. Safety goggles would fit snuggly round your eyes so as to help protect your eyes from spill and splashes that result from spills in the lab. Additionally, a lab coat would help to protect your skin and your clothes from materials that can splash and burn or irritate your skin and eat holes in your clothes after they are washed. Safety should be top priority in any lab.
High School Chemistry lab Textbooks. If you are going to equip your high school with lab equipment, you will need well outlined chemistry lab textbooks to provide you with experiments that you can perform. Chemistry lab textbooks that are well written with step-by-step instructions included as well as strong emphasis on safety.

Chemistry Exercises for SMA UN Exam Pack 3

2011-02-13T09:44:00.003-08:00

High school science lab equipment can make the difference between a student that takes an interest in a science based subject such as chemistry or one that ultimately considers it a waste of time. For me, the laboratory portion of my high school chemistry course was always the most fun. Listening to the teacher as we walked through the experiment was always a fascinating experience. Fortunately, our high school was equipped with a complete set of high school science lab equipment, namely, chemistry lab equipment.

Chemistry Exercises for SMA UN Exam - Natural Science Program

We were equipped with everything we needed such as beakers and flasks as well as glass stirring rods and porcelain crucibles. Additionally, we had Bunsen burners as well as mass balances and weigh boats so that we could weigh out salts and volumetric flasks so that we could prepare solutions and standards. On occasions, we would set up stands, clamps and rings so that we could create unique experiments. This made learning much easier because we could actually see what we were learning in action. Watch the solutions change color as we titrated was always a fascinating experience and still is to this day.
First and foremost, we always wore safety goggles to help protect our eyes from any spills and splashes that may have occurred. Additionally, we always wore a lab coat to protect not only our skin from the potentially irritating solutes and solvents that we were working with but also our clothes. On some occasions, mysterious holes would appear in my clothes when they were washed. A lab coat will help prevent this.
In addition to safety goggles and lab coats we would also use chemical resistant gloves to protect our hands from any splashes. Finally, we wore the appropriate respirators as specified by the MSDS's of the chemicals that we were working with to help prevent us from breathing in any potentially irritating fumes.
Working in a high school science lab was lots of fun and I have very fond memories of it. If we hadn't had the appropriate high school science lab equipment in our lab, I would have never taken an interest.

Chemistry Exercises for SMA UN Exam Pack 4

2011-02-13T09:44:00.002-08:00

The world of science, especially chemistry can be absolutely loads of fun to explore and learn about. Learning about what different materials are made of and how these materials react or interact with other materials is a field of study that dates back literally thousands of years. Even ancient civilizations, as far back as ancient Greece had individuals within their societies that practiced and ancient form of this branch of science.

Chemistry Exercises for SMA UN Exam - Natural Science Program

But regardless of what time period an individual practicing chemistry may have lived in the hazards of working with chemicals have always been present. For this reason, basic lab safety equipment is required when working with chemicals of any nature. Eye Protection. Your eyes are very delicate instruments. When working with chemicals of any nature, your eyes must always be protected. Regardless of the type of chemical you are working with, the potential for solids such as salts or liquids such as solvents can easily splash. For this reason, safety goggles are recommended at all times. Goggles reduce the probability of chemicals that may burn or scratch your eye from getting in your eyes.
Skin Protection. As with the case of your eyes, the protection of your skin is also important. Just as in the case of your eyes, your skin can easily be damaged by many common chemicals, even common ones found in the household. For this reason, your skin must be protected at all times. Two items that will assist in protecting your skin are a lab coat and gloves. A lab coat is necessary so as to provide a protective barrier between the chemical being handled and your skin.
Certain chemicals, depending on the type, can burn your skin and leave permanent marks or worse. Your lab coat should always be clean. Never wear a lab coat that has chemicals on it. Additionally, gloves designed for use with chemicals will help protect the skin on your hands from being affected by the chemicals you are working with. One note of caution. Not all gloves protect from all chemicals. To find out what gloves are to be used for any certain chemical, check the required Personal Protective Equipment (PPE) as found on that chemical's Manufacturer Safety Data Sheet (MSDS). Respiratory Protection. Just as important as your eyes and skin are your lungs.
Chemical vapors can easily and almost instantly enter your bloodstream through your respiratory system. Two of the main things that are required to help prevent this from happening are a chemical respirator and a well-ventilated work area. A chemical respirator reduces the amount of vapors that are present in the air you are breathing in. However, a chemical respirator should not be your first line of respiratory defense against vapors. Your first and primary method of protection should be from mechanical ventilation. Mechanical ventilation removes the vapors and takes them away from the work area. Practicing chemistry can be a lot of fun, if it is practiced safely. Reading this article does NOT qualify you to work with chemicals. Do not handle chemicals unless you have been trained by appropriately authorized and qualified personnel.

Chemistry Exercises for SMA UN Exam Pack 5

2011-02-13T09:44:00.001-08:00

If you want to pursue higher education in Chemistry, applying to one of America's top notch Science universities would be your best option. There are a wide range of good Science institutions in the United States today. While these schools offer outstanding education and training to aspiring scientists, they also impose strict requirements that applicants need to adhere to in order for them to be taken in as students. One of which is the GRE Chemistry test. Applicants who hope to be admitted to Chemistry graduate schools need to achieve a certain GRE score to be admitted. In this article, we would like to share with you some tips to help you get a good score on the GRE Chemistry exam.

Chemistry Exercises for SMA UN Exam - Natural Science Program

• Master the basics. Chemistry is not everyone's ideal career path. What most aspiring chemists do is to take up refresher courses on basic Chemistry a few months before they finish their undergraduate degree. Most of the problems in the GRE are not as advanced as what many of us may think. No matter how advanced your education and skills are, if you forgot the more basic concepts, you could have a difficult time acing the test.
• Self-study. Some do not mind spending a huge amount of money to enroll themselves in prep course. But if you consider Chemistry as your forte, there's not a big need for you to enroll in review institutions. Instead, you can study on your own. The test is made up of four parts: inorganic chemistry, analytical chemistry, organic chemistry, and physical chemistry. Find time to review old notes and high school books. As mentioned, basic Chemistry lessons are most likely to come up in the GRE.
• Practice through sample tests. You can find a wide range of practice tests online. As the cliché goes: "practice makes perfect." Allot a few hours every day to practice solving problems. Practice is the most effective refresher. No matter how widely-read you are, if you do not try solving actual problems, answering some Chemistry problems won't be as easy as you thought they would be.
Follow these simple GRE prep tips and you will surely make it to the actual GRE examination. It will be tedious and would demand hard work but it will definitely be worth it once you land to your dream school.

Chemistry Exercises for SMA UN Exam Pack 6

2011-02-13T09:44:00.000-08:00

Chemistry is said to be an interesting subject. Of course, many of us are grappling to memorize the periodic table: the atomic number and mass, yet for some they deem it as practice.
I love Chemistry that is why when I was in high school I was a member of the Science Club. Maybe, I was just too curios and interested in all of God's creations and gifts to man.

Chemistry Exercises for SMA UN Exam - Natural Science Program

Check this:
Atoms are the building blocks of chemistry. They are the smallest component of anything; molecules.
Chemists study the behavior and characteristics of substances. These are called the properties of a substance. All substances are made ups of tiny particles called atoms. A substance the size of a pinhead contains billions of atoms.
An atom is the smallest unit of a substance that can exist and retain the properties of that substance. Each element has its own chemical name and a shortened name known as a chemical symbol.
Most symbols are abbreviations of the chemical name, like h for hydrogen. However, some symbols come from other languages. For example, the chemical symbol for gold, Au, comes from its Latin name, aurum.
The states of matter define how things move and how we can differentiate one substance from another.
Substances are divided into solid, liquids or gases. These are known as the states of matter. It is known as a change of state. It normally occurs because of a change in the energy of a substance as a result of heating or cooling.
Many substances can exist in more than one state. In a chemical reaction, it is important to know in which state the various chemicals are being used. This is done by placing the symbol (s) for solid, (l) for liquid, and (g) for gas after the name of the substances.
Evidence of molecules
The molecules in liquids and gases are continually moving in a completely random way. This can be seen when smoke molecules are viewed under a microscope. This movement is known as "Brownian motion."
The gradual missing of two or more different gases or liquids is called diffusion. This mixing is caused by molecules of different substances colliding and intermingling. This is why you can smell perfumes (whose molecules diffuse through the air) from some distance away.
So to answer the kid's question: Is water liquid or solid? Many substances can exist in more than one state. It is liquid when it flows freely and solid in the form of ice - until the change again.

Chemistry Exercises for SMA UN Exam Pack 2

2011-02-13T09:41:00.000-08:00

There are plenty of different chemistry science fair project ideas to choose from that will both be interesting to the student and allow them to understand the principles of this science. Obviously, the level of understanding will play a role in how advanced the project should be, otherwise the student will either be too bored or confused. If the student is in middle school, from seventh grade to the 9th grade, then they may enjoy an experiment involving metal. Considering all the different properties and types that there are in nature, testing which type of metal protects against radiation the best is a good idea to present at a fair.

Chemistry Exercises for SMA UN Exam - Natural Science Program

Another idea with metal is to consider testing which lubricants are the most effective at reducing friction on the different surfaces. The results of this kind of experiment would be very interesting to see at a chemistry science fair. Of course, if the students are in high school, then they might consider doing something a little more advanced, such as testing how hydrochloric acid reacts with the different types of metals. Other ideas that aren't related to metals include biomass and fuels. A great experiment would be to test which types of oils are the most effective at powering lawn equipment.
Students might be interested in experiments that deal with physics and research. One great example is the project of building a biomass generator. This would make a fantastic group project that would attract plenty of attention at any chemistry science fair and is possible for students in middle school or high school to complete. Experimenting with salt is always interesting as well, and a great idea is to see just how much salt is required to make different objects float. It can also be compared to sugar by testing which substance dissolves more quickly in certain liquids.
Different students will have varying tastes in regards to what is entertaining and what isn't, but fortunately there are more than enough ideas to choose from.

Organic Chemistry

2011-02-13T09:11:00.000-08:00

Organic Chemistry is a very difficult class in and of itself. So it is huge that you have a textbook that will be easy to understand, and that will challenge you at the same time. I took Organic Chemistry this past year, and this textbook was one of the most useful books I've had for just about any class I've taken.
From my own use, Organic Chemistry By Janice Gorzynski Smith (3rd, Third Edition)
is hands down the book to use if you are taking Organic Chemistry 1 or 2.

My Favorite Features
Janice Gorzynski Smith uses very understandable language.
Has Tons of practice problems.
Thorough Explanations
Uses Images To Help Show Concepts Effectively
"Easy" To Understand
I'm not going to come right out and say that the material is easy to understand since this is one of the toughest courses you'll take, but I will say that the material was much easier to grasp than simply listening to a professor speak for an hour or two. I highly recommend slowly going through the material because this textbook leads you thoroughly into each concept and builds upon itself.
Practice Problems Galore!
This was hands down the best feature of this textbook because it offered practice problems throughout each chapter. There were also practice problems at the end of each chapter as well. Trust me when I say that you will learn the material easier by going through the problems. You're paying $1,000 or more for the course so you should pay the extra hundred or so to make sure you do as well as you can.

Chemistry Courses

2011-01-12T05:49:00.001-08:00

Colleges and universities often have a wide, dizzying number of study programs available for students, especially when compared to what was offered at the high school level. It can be quite a challenge just to pick or choose which study programs to pursue. Here are some useful tips on what to study for college success or university success.

If you already know what field you want to be in for your future career, then it makes sense to take the related courses at university or college. If you intend on going to a professional program like medical school, you will have to take certain course prerequisites like biology and chemistry. But even after prerequisites, it's still a good idea to fill up the rest of your course list with a variety of other subjects in order to get a wider field of knowledge. This is part of college success as you can take some courses as special interest. I took a course each on general psychology and basic law just for interest without the intention of ever becoming either a psychologist or a lawyer.
If you don't know what career you want, then take the programs that interest you most for now. Sure, some degrees might result in getting jobs easier after graduation but trust me, if you take certain programs just to get a job, you will not be happy if you end up hating the field. Get an education with the programs you are really interested in and with effort, you will find jobs in the future.
No matter what program you take, there will be courses that will seem to have no use for your future career. I recall sitting in an organic chemistry class wondering why the heck I was learning that stuff anyway. A sharp mind will help you in a future career, plan for your investments or anything else that will take some brainpower. Remember that college success or university success is not just about the grades. It is about how your mind is developed during those years.