Learners observe that the volume of one mole of any gas is 22.4 L at standard temperature and pressure. An illustration shows that only the mass of the molar volume differs with the identity of the gas.

In this animated and interactive object, learners follow two rules to write unit conversion fractions.

Learners view several movie clips that demonstrate the use of an indicator to follow the neutralization reaction that occurs when an acid and a base are mixed. Students test their knowledge in a series of questions. Immediate feedback is given.

In this animated object, students examine the role that the solubility of water plays in various biological functions.

Ask it: SemesterHelp to Review for Semester Exam Chemistry

Learn about ions

Play this game to review for your quiz.

These questions are on atoms, and atomic structure.