Chem Tutor
Chem Tutor: Single Replacement Reactions
Information and examples on single and double replacement reactions, also called single displacement, single substitution, or activity replacement and double displacement, or metathesis. Practice problems with answers are available.
Thomas Jefferson National Accelerator Facility
Jefferson Lab: Balancing Act!
The computer will give you a number of incomplete chemical equations. Balance the chemical equations by selecting coefficients from the pull-down menus. Once you think the equation is balanced, press the 'Check my answer!' button.
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Balancing Chemical Equations
Learn how to balance equations with this fun, animated exercise. Add in the correct coefficients to get the right answers.
Chem Tutor
Chem Tutor: Basic Stiochiometry
Detailed discussion of stoichiometry, mols, and percents. Includes examples showing dimensional analysis (factor-lable method) and a link to the mole road map (a diagram which leads one through the stoichiometric problem-solving process).
CK-12 Foundation
Ck 12: Chemistry Simulation: Balancing Chemical Equations
[Free Registration/Login Required] Learn the basics of chemical equations by watching methane bubbles light on fire. Practice balancing chemical equations.