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Intro to I.S.
cleaves-pnhs-intro to I.S. vocab
Question | Answer |
---|---|
solid | a state of matter in which materials have a definite shape and definite volume. |
liquids | a state of matter in which material has a definite volume but not a definite shape |
gas | a state of matter in which material has neither definite volume or shape. |
kinetic energy | the energy an object has due to its motion. |
phase change | the reversible physical change that occurs when a substance changes from one state of matter to another |
endothermic | the system absorbs energy from its surroundings. |
heat of fusion | varies from one substance to another |
exothermic | the system releases energy to its surroundings |
vaporization | the phase in which a substance changes from a liquid into a gas |
heat of vaporization | varies from one substance to another |
evaporation | the process of changing a liquid to a gas from temperatures below substance boiling point |
vapor pressure | pressure caused by collisions |
condensation | the phase of which a substance changes from a gas to a liquid |
sublimation | the phase of which a substance changes from a solid to a gas or vapor without changes to a liquid first |
deposition | when a gas or vapor changes directly to a solid without changing to a liquid |