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Intro to I.S

Hilton-pnhs-intro I.S vocab

QuestionAnswer
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 volume Gas
The energy an object has due to its motion Kinetic energy
The reversible physical change that occurs when a substance changes from one state of matter to another Phase changes
When the system absorbs energy from its surroundings Endothermic change
The energy a substance must absorb in order to change from a solid to a liquid Heat of fusion
WHen the system releases energy to its surroundings Exothermic change
The change phase in which a substance changes from a liquid to a gas Vaporization
The energy a substance must absorb in order to change from a liquid to a gas Heat of vaporization
The process that changes a substance from a liquid to a gas at temperatures below the substance's boiling point Evaporation
The pressure caused by the collisions of the vapor and the walls of the container Vapor pressure
The phase change in which a substance changes from a gas or vapor to 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
When a gas or vapor changes directly into a solid without first changing to a liquid Deposition
Created by: ahilton
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