| A | B |
|---|
| Solid | The state of matter in which materials have a definite shape and volume. |
| Liquid | State of matter in which a material has a definite volume but no definite shape. |
| Gas | State of matter that has no definite shape or volume. |
| Kinetic Energy | Energy an object has due to its motion. |
| Pressure | The result of a force distributed over an area. |
| Absolulte zero | A temperature of 0 kelvins. |
| Charles's Law | The direct proportion of the volume of a gas to its temperature if the pressure and the number of particles of the gas are constant. |
| Boyle's Law | The inverse variation of volume of a gas with its pressure if the temperature and the number of particles are constant. |
| Phase Change | A reversible physical change that occurs when a substance changes from one state of matter to another. |
| Heat of Fusion | The energy a substance must absorb in order to change from a solid to a liquid. |
| Vaporization | The phase change in which a substance changes from a liquid to a gas. |
| Evaporation | The process taht changes a substance from a liquid to a gas at temperatures below the substance's boiling point. |
| Condensation | The phase change in which a substance changes from a gas or vapor to a liquid. |
| Deposition | The phase change in which a gas or vapor changes directly into a solid without first changing into a liquid. |
| Endothermic | A description of a change in which a system absorbs energy from its surroundings. (feels cold) |
| Exothermic | A description of a change in which a system releases energy to its surroundings. (feels hot) |
| Heat of Vaporization | The energy a substance must absorb in order to change from a liquid to a gas. |
| Vapor Pressure | The pressure caused by the collisions of particles in a vapor with the walls of a container. |
| Sublimation | The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first. |
