Changes in State of Matter

Guiding Question: Why do different liquids and solids transfer energy (for example, heat energy) at different rates?

Can you freeze air?

What is in the bubbles of boiling water?

What does it mean for something to freeze, boil, and melt?

Freezing, melting and boiling points are properties of pure substances; however, they can be changed under certain conditions, such as a change in pressure or the addition of solutes.