| A | B |
|---|
| solid | The state of matter in which materials have a definite shape and a definite volume. |
| liquid | The state of matter in which a material has a definite volume but not a definite shape. |
| gas | The state of matter in which a material has neither a definite shape nor a definite volume. |
| kinetic energy | The energy that an object has due to its motion. |
| pressure | The result of force distributed over an area. |
| absolute zero | This temperature is equal to 0K on the Kelvin terperature scale. |
| Charles's law | States that the volume of a gas is directly proportional to its temperature in kelvins if the pressure and the number of particle of the gas are constant. |
| Boyle's law | States that the volume of a gas is inversely proportional to its pressure if the temperature and the number of particles are constant. |
| phase change | The reversible physical change that occurs when a substance changes from one state of matter to another. |
| endothermic | A type of change where the system absorbs energy from its surroundings. |
| heat of fusion | The amount of energy a substance must absorb in order to change from a solid to a liquid |
| exothermic | A description of a change in which a system releases energy to its surroundings. |
| vaporization | The phase change in which a substance changes from a liquid to a gas. |
| heat of vaporization | The energy a substance must absorb in order to change from a liquid to a gas. |
| evaporation | The process that changes a substance from a liquid to a gas at temperatures below the substance's boiling point. |
| vapor pressure | The pressure caused by collisions of particles in a vapor with the walls of a container. |
| condensation | The phase change in which a substance changes from a gas or vapor to a liquid. |
| sublimation | The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first. |
| deposition | The phase change in which a gas or vapor changes directly into a solid without first changing into a liquid. |
