States of Matter, Phases of Matter, solids, liquids, gases, arrangement of particles, freezing, melting, evaporation, boiling, condensation, sublimation, fixed volume, fixed shape, expanding, and compression.
This is a 81 slide presentation on the Three States of Matter and How they Change. It is a fun, spy-themed presentation that will entertain your students while they learn. I've had a "prequel" product posted on Atoms and Molecules with the same theme and the feedback has been excellent.