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Intro. to I.S.
soares-pnhs-intro to I.S. vocab
| Question | Answer |
|---|---|
| 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 shape nor a definite volume. |
| kinetic energy | the energy an object has due to its motion. |
| phase change | a reversible 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 into 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 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. |
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abbydepp13
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