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Chapter 3

physical science

QuestionAnswer
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 no definite shape or volume
What is Kinetic Energy? the energy an object has due to its motion
What is pressure? the result of a force distributed over an area
What is absolute zero? a temperature of 0 kelvins
What is Charles's law? the direct proportion of the volume of a gas to its temperature (in kelvins)if the pressure and the number of particles of the gas are constant
What is Boyle's law? the inverse variation of the volume of a gas with its pressure if the temperature and the number of particles are constant
What is a phase change? a reversible physical change that occurs when a substance changes from one state of matter to another
What is endothermic? a description of a change in which a system absorbs energy from its surroundings
What is heat of fusion? the energy a substance must absorb in order yo change from a solid to a liquid
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 evaporation? the process that changes a substance from a liquid to a gas at temperatures below the substance's boiling point
What is vapor pressure? the pressure cause 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 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 to 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
Created by: helloJ0urdan
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