Chemistry

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How to Calculate Kinetics Problems

The study of kinetics, the speed of chemical reactions, is essential to the study of chemistry and is a major topic in any Chemistry II class. Knowing the concepts of kinetics can help your understanding [more…]

How to Solve Homogeneous Equilibrium Problems

The equilibrium constant describes the relationship between the amounts of the reactants and the products at a certain temperature. You'll need to know the equilibrium constant as you study Chemistry II [more…]

Solving Acid-Base Equilibrium Problems

The acid and base equilibrium constant expressions describe the relationship between the amounts of reactants and products in aqueous acid-base systems. For the following general weak-acid equilibrium: [more…]

Calculating Solubility Equilibrium Problems

The solubility product equation is used to describe the equilibrium situation when a not-so-soluble salt is dissolving in water. For the general dissociation of a sparingly soluble salt: [more…]

Tackling Thermodynamics Problems

The Gibbs Free Energy is the best indicator about whether a reaction will be spontaneous or nonspontaneous. You'll need to know this as you study Chemistry II. It has the form: [more…]

Chemistry II For Dummies Cheat Sheet

Chemistry II is more than fires and smelly explosions. Chemistry II is more about solving calculations. In fact, Chemistry II has a lot more calculations and math than your Chemistry I class did. In your [more…]

Ten Great Careers in Chemistry

All college chemistry majors must sooner or later ask thequestion: What can I do with a degree in chemistry? It's a good question. Here are some typical jobs that chemists might hold, in case you're thinking [more…]

Periodic Table Terms to Study for the Miller Analogies Test (MAT)

Luckily, you don’t need to be a scientist to do well with MAT science analogies. To do well on the chemistry part of MAT, you just need to know the basics of chemistry and the periodic table, a chart that [more…]

Chemistry Topics to Study for the Miller Analogies Test (MAT)

Luckily, you don't need to be a science major to do well with MAT science analogies. You just need to know the basics about the major natural sciences [more…]

The Periodic Table

The table is like a shelf that is used to organize all the elements found in nature, and some that are man-made even. It is useful because it arranges each element into a box, sort of like how you arrange [more…]

Modern Marvels Due to Inorganic Chemistry

Since the dawn of human kind, materials have played a pivotal role to our existence. The ability to make housing to fend off bad weather and wet conditions, for example, certainly made living much easier [more…]

The Discovery of Oxygen

Oxygen was discovered by Swedish chemist Carl Wilhelm Scheele in 1772. He discovered that by heating mercuric oxide, a gas (later identified as oxygen) formed. Scheele called the gas [more…]

The Discovery of Helium

Upon its discovery by French astronomer Pierre J. C. Janssen in 1868, helium was thought to exist on the sun, but not here on the earth. As he was observing a solar eclipse in India, Janssen noticed a [more…]

Important Chemistry Terms

There are many words and terms that are specific to chemistry, in this case inorganic chemistry. Here is a list of some of the most common and most interesting terms you need to know. [more…]

Inorganic Chemistry For Dummies Cheat Sheet

Inorganic chemistry deals with all the elements of the periodic table. For this reason it’s extremely useful in understand the world around you, everything from the chemistry interstellar space, planets [more…]

Keeping Track of Units in Chemistry Calculations

When completing a chemistry calculation, always write the number with the unit. Number, unit — it’s like having a first and last name.

Consistently writing down the units allows you to see what cancels [more…]

Balancing Chemical Equations

A chemical equation shows what happens in a chemical reaction. As in any equation, the elements on the left side of the equation (the reactants) must equal the elements on the right [more…]

Formulas for Solving Problems Dealing with Acids and Bases

Acid-base reactions and their associated calculations play a primary role in many chemical, biological, and environmental systems. Whether you’re determining hydrogen ion concentration, [more…]

Writing Electron Configurations

An electron configuration is a description of the relative locations of electrons in an atom or ion. Electron configurations are based primarily on three principles: the Aufbau principle, the Pauli exclusion [more…]

1,001 Chemistry Practice Problems For Dummies Cheat Sheet

Solving chemistry problems is a great way to master the various laws and calculations you encounter in a typical chemistry class. This Cheat Sheet provides some basic formulas, techniques, and tips you [more…]

Common Polyatomic Ions to Know for the AP Chemistry Exam

Polyatomic ions are ions that consist of more than one kind of atom. (Ions form when an atom either gains or loses valence electrons in pursuit of filling its valence shell.) The following table lists [more…]

AP Chemistry: Rules for Significant Figures

After you get an answer on the AP Chemistry exam, make sure that you provide the correct number of significant figures in your answer. Here is a summary of the rules for assigning significant figures: [more…]

AP Chemistry: An Overview of Common Lab Equipment

You won't be directly tested on your knowledge of lab equipment, however the AP chemistry exam will often describe and/or diagram experimental setups so you will need to be able to recognize and understand [more…]

AP Chemistry For Dummies Cheat Sheet

Taking the AP Chemistry exam doesn't have to be stressful if you review some key material. Help yourself prepare for the AP Chemistry exam by knowing your way around chemistry lab equipment and reviewing [more…]

Organic Chemistry through the Looking Glass

Here's something to remember as you study organic chemistry: Life is built on chiral building blocks — that is, the molecules that make up living things have a particular handedness [more…]

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