Student notes for chemical equations and reactions.

Scuba divers have to control their depth in the water. Since the human body is less dense than water, people float. A diver wears two pieces of equipment: a weigh belt and a buoyancy compensator. The heavy metal weights on the belt enable the diver to sink. The buoyancy compensator can be inflated with air to increase buoyancy or deflated to reduce it. Here's an experiment to help the student see how this works.

Series of student supplemental materials in MS Word for chemical bonding and reactions.

Student practice for balancing equations.

Lab for exploring chemical reactions.