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3.3 Chemistry

Vocabulary Words

QuestionAnswer
phase change reversible physical change that occurs when a substance changes from one state of matter to another
endothermic description of a change in which a system absorbs energy from its surroundings
heat of fusion energy a substance must absorb in order to change from a solid to a liquid
exothermic description of a change in which a system releases energy to its surroundings
vaporization phase change in which a substance changes from a liquid to a gas
heat of vaporization energy a substance must absorb in order to change from a liquid to a solid
evaporation process that changes a substance from a liquid to a gas at temperatures below the substance's boiling point
vapor pressure phase change in which a substance changes from a liquid into a gas
condensation phase change in which a substance changes from a gas or vapor to a liquid
sublimation phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first
deposition when a gas or vapor changes directly into a solid without first changing to a liquid
Created by: MarieElyn