ChemTeam - An excellent tutorial on balancing reactions and reaction types, including practice problems.
Gwen Sibert, Roanoke Valley Governor's School - Shows the basics of writing and balancing equations, how to predict the products of four general types of inorganic reactions, and how to write and balance equations for the combustion of hydrocarbons.
Irydium Project, Carnegie Mellon - Java applet displays mole and mass changes in a chemical reaction.
News & Events
News from around the world of science.
Google - Research database allows searching of the scholarly literature.
PhET / University of Colorado, Boulder - interactive site to learn how to balance a chemical equation, recognize the number of atoms of each element, and translate from symbolic to molecular representations of matter.