In this interactive lesson, students examine the quantitative relationship between chemicals in a balanced mathematical equation.

In this interactive object, learners determine the limiting reagent and the excess reagent in chemical reactions. Learners test their knowledge by solving three problems.

In this animated activity, learners examine what gases are composed of and how their particles interact. They also consider several assumptions that form the basis for the Kinetic Theory of Gases.

Learners examine a table containing the names of common cations and anions. They then check their knowledge by answering a series of questions.