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Question | Answer |
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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 an object has due to its motion |
Phase Change | A reversable physical change that occurs when a substance changes from one state of matter to another |
Endothermic | A description of a change in which a system absorbs energy from its surroundings |
Heat of Fusion | The 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 substances boiling point |
Vapor Pressure | The pressure caused by the 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 |