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

In this interactive and animated object, learners use solubility rules to predict when an insoluble ionic compound will precipitate in a double replacement reaction. Step-by-step examples are given.

In this well-illustrated object, learners examine the structures and properties of the four types of solids: molecular, metallic, ionic, and covalent network. Five interactive questions are provided.

Roman numerals are used to identify the charges on metal cations having multiple oxidation states. Five examples are provided for practice.