This monograph consists of a text, a guide to the experiments for students, and a guide to the experiments for instructors. The text is intended to provide continuity to relate the experiments to one another and to provide some mathematical basis for analysis of the various phenomena observed. Only the five experiments performed in the student testing program of the conference are included in the student guide. However, the instructor's guide contains the descriptions for 23 experiments, most of which have been successfully tested. The text consists of four chapters: Pressure and Temperature as Properties of Matter; Equations of State; Heat; and Phase and Phase Diagrams. (PR)