| A | B |
|---|
| Absolute Zero | Temperature at which all matter stops moving. |
| Boyle’s Law | The volume of a gas is inversely proportional to pressure. |
| Charles’s Law | The volume of a gas is directly proportional to temperature. |
| Condensation | Phase change when a substance goes from a gas to a liquid. |
| Deposition | Phase change when a substance goes directly from a gas to a solid. |
| Endothermic | The substance absorbs energy from its surroundings. |
| Evaporation | The process that changes a liquid to a gas when not at its boiling point. |
| Exothermic | The substance releases energy to its surroundings. |
| Gas | Has neither a definite shape nor volume. |
| Heat of Fusion | The amount of heat needed to fuse two atoms of a substance together. |
| Heat of Vaporization | The amount of heat needed to vaporize atoms of a liquid to the atmosphere. |
| Kinetic Energy | Energy because of motion. |
| Liquid | Has a definite volume but not a definite shape. |
| Phase Change | The reversible physical change that occurs when a substance changes from one state of matter to another. |
| Pressure | Force distributed over an area. |
| Solid | Matter that has a definite volume and shape. |
| Sublimation | Phase change when a substance goes directly from a solid to a gas. |
| Vapor Pressure | The amount of pressure due to collisions of gas particles against a container. |
| Vaporization | The phase change when a substance goes from a liquid to a gas. |
