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Intro to I.S.

Ureneck-pnhs-intro to I.S. vocab

QuestionAnswer
What is the state of matter in which materials have a definite shape and volume? solid
Which state of matter has a definite volume but not a definite shape? Liquid
Which state of matter has neither a definite shape nor volume? gas
What is the energy an object has due to its motion?` Kinetic Energy
What is the result of a force distributed over an area? pressure
What is a temperature of 0 Kelvins called? absolute zero
What states that the volume of gas is directly proportional to its temperature in kelvins as long as the pressrue and numbers of gas particles are constant? Charle's law
What states that the volume of a gas is inversely proportional to its pressure if the temperature and the number of particles are constant? Boyle's law
What is a reversible physical change that occurs when a substance changes from one state of matter to another? phase change
What happens during an endothermic change? The system absorbs energy from its surroundings
What happens during an exothermic change? The system releases energy to its surroundings
What happens during vaporization? A substance changes from a liquid into a gas
What is the process that changes a substance from a liquid to a gas at temperatures below boiling point? evaporation
What causes vapor pressure? The collisions of water vapor and the walls of the container
What is condensation? The phase change in which a substance changes from a gas or vapor to a liquid.
What happens in sublimation? A substance changes from a solid to a gas or vapor without changing to a liquid first.
What happens in deposition? A gas or vapor changes directly into a solid without first changing to a liquid.
What is the heat of fusion? The amount of energy absorbed as a substance melts.
Created by: lureneck1197
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