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States of Matter

dolphyn - pnhs - physical properties I.S. vocab

QuestionAnswer
What is evaporation? The process that changes a substance from a liquid to a gas at temperatures below the substance's boiling point.
What is a solid? The state of matter in which materials have a definite shape and a definite volume.
What is a liquid? The state of matter in which a material has a definite volume but not a definite shape.
What is a gas? The state of matter in which a material has neither a definite shape nor a definite volume.
What is kinetic energy? The energy an object has due to its motion.
What is a phase change? A reversible physical change that occurs when a substance changes from one state of matter to another.
What is an endothermic? A description of a change in which a system absorbs energy from its surroundings.
What is heat of fusion? A nuclear reaction in which the nuclei of two atoms combine to form a larger nucleus.
What is exothermic? A description of a change in which a system releases energy to its surroundings.
What is vaporization? The phase change in which a substance changes from a liquid into a gas.
What is heat of vaporization? The energy a substance must absorb in order to change from a liquid to a gas.
What is vapor pressure? The pressure caused by the collisions of particles in a vapor with the walls of a container.
What is condensation? The phase change in which a substance changes from a gas or a vapor to a liquid.
What is sublimation? The phase change in which a substance changes from a solid to a gas or vapor without changing into a liquid first.
What is deposition? The phase change in which a gas or vapor changes directly into a solid without first changing into a liquid; the placement of sediment that has been transported from another location.
Created by: megand430
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