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

In this animated object, students examine the role equilibrium plays in everyday life. Formulas are presented in an interactive way.

Learners follow a four-step process to determine the empirical formula of a compound from the masses of its constituent elements. The molecular formula is determined in a fifth step using the molecular weight of the compound.

In this interactive object, learners calculate formula and molecular weights by working through five examples and two problems.