This unit of instruction includes nine laboratory experiments. All of the experiments are from the D.C. Health Revision of the Chemical Education Materials Study (CHEMS) with one exception. Program six is the lab from the original version of the CHEMS program. Each program consists of three parts (1) the lab and computer hints, (2) the description of a sample run, and (3) the actual sample run. The programs may be used as a check for actual student calculations or where the mathematics seems extermely difficult, for running the actual program. To use these programs with understanding, suggested reference materials are listed. A cross reference list for each of the programs is included in the manual indicating the code, the Health curriculum lab number and the Freeman lab number. Concepts covered include: (1) Masses of Equal Volumes of Gases, (2) Cooper-Silver Nitrate Reaction, (3) Conservation of Mass, (4) Formula of a Hydrate, (5) Reaction of magnesium Equilibrium, (8) Acid-Base Titration, and (9) Molar Concepts. (EB)