• Knowledge of chemicals and chemical laws helps us to understand our world and helps us form intelligent judgments concerning the use of the substances around us. Any substance, natural or manmade, has a chemical history and implications in our world. Students discover basic laws of chemistry, modern theory of the atom, bonding of substances, reactions, the states of matter, and qualitative analysis. The students learn how to use chemical equipment and procedures. During the last month of school, students identify unknown chemicals.