Stoichiometry & Reactions

Stoichiometry is concerned with the proportions of elements that combine during chemical reactions. Test your understanding of stoichiomety with this fun multiple choice quiz.

Here is a step-by-step tutorial for balancing chemical equations, along with a worked example. This is a must-read for students of general and introductory chemistry!

Get step-by-step instructions for balancing redox reactions for conservation of mass and charge in electrochemistry.

Chemical reactions may be classified according to the way the reaction occurs. This video takes a look at the main categories of chemical reactions and provides examples of each reaction type.

Learn how to classify chemical reactions using kinetics. Identify and define zero, first, second, mixed, and higher order reactions.

Learn what catalysts are and how they affect the activation energy and reaction rate of a chemical reaction.

Learn about the basics of chemical equilibrium, including how to write the expression for chemical equilibrium.

This is a table of some of the most common polyatomic ions. Names, formulae, and charges are listed.

This is a diagram explaining the components of redox (oxidation-reduction) half-reactions.

Learn about endothermic and exothermic chemical reactions and get instructions to perform your own hot and cold chemistry demonstrations.

Here's a list and description of the major factors that can affect the rate of a chemical reaction. Links for more detailed information are also provided.

Certain rules or laws apply to thermochemical equations and enthalpy. These are explanations and examples of these laws, including Hess's Law.

Learn what Le Chatelier's Principle is and how it can be applied to predict the effect of a change in conditions on chemical equilibrium.

Learn how molecules, moles, and Avogadro's number relate to each other. This is a good introduction to the study of compounds and stoichiometry.

Let's review some important types of reactions that occur in aqueous solution and take a look at the rules that are used when writing balanced equations for water reactions.

Learn how to assign oxidation numbers to keep track of the distribution of electrons during a chemical reaction.

Learn about the chemistry behind salt formation, including neutralization and hydrolysis reactions.

This is a table of the solubility product constants for some common ions in aqueous solution at 25 degrees Celsius.

Learn about the different types of chemical reactions and get examples of the reaction types.

There are four main categories of inorganic chemical reactions. Can you name them all? Here they are, along with examples of each type.

No, we're not talking about the small burrowing mammal! Here's a look at a standard unit in chemistry and why it's used.

This example problem demonstrates how to predict the amount of product produced from a given amount of reactants.

This example problem demonstrates how to calculate the amount of reactant needed to produce a product.

What Is a Chemical Equation?

Before performing chemical reactions, it is helpful to know how much product will be produced with given quantities of reactants. This is known as the theoretical yield. This strategy makes calculating theoretical yield a simple process.

What is the difference between a chemical reaction and the chemical equation? The terms are often used interchangeably, but they technically have different meanings.