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States of Matter
McClay-States of Matter
| Question | Answer |
|---|---|
| the state of matter in which materials have a definite shape and a definite volume | solid |
| the state of matter in which a material has a definite volume but not a definite shape | liquid |
| the state of matter in which a material has neither a definite shape nor a definite | gas |
| the energy an object has due to its motion | kinetic energy |
| a reversible physical change that occurs when a substance changes from one state of matter to another | phase change |
| a description of a change in which a system absorbs energy from its surroundings | endothermic |
| the energy of a substance must absorb in order to change from solid to a liquid | heat of fusion |
| a description of a change in which a system releases in energy to its surrounding | exothermic |
| the phase of change in which a system changes fro a liquid into a gas | vaporization |
| the energy a substance must absorb in order to change from a solid to a liquid | heat of vaporization |
| the process that changes a a substance from a liquid to a gas at temperatures below the substances boiling point | evaporation |
| the pressure caused by the collisions of particles in a vapor with the walls of a container | vapor pressure |
| the phase change in which the substance changes from a gas or vapor into a liquid | condensation |
| the phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first | sublimation |
| the phase change in which a gas or vapor changes directly into a solid without first changing into a liquid | deposition |