Do you need to know a specific value of a specific quantity for any given substance? If so, this is the place. Find the heat capacity, heats of vaporization and fusion, and much more from this page.

An interactive simulation will heat, cool and compress atoms and molecules. Watch as they change between solid, liquid and gas phases. Recognize that different substances have different properties which will affect the temperatures for...

Explains what permafrost is, the different classes, features of deep permafrost, what happens when it melts, difficulties with constructing anything on top of it, characteristics of tundra, and patterns left in the tundra by the...

Investigate states of matter while making ice cream. Explore how to turn a liquid into a solid by removing heat energy.