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Intro to IS

Whynott-pnhs-intro to Is vocab

QuestionAnswer
Which state of matter has a definite shape and a definite volume? Example: Copper wire Solids have definite shapes and definite volumes.
Which state of matter takes the shape of the container it's in and has a constant volume (because of the forces of attraction keep its particles close together)? Example: Orange juice This state of matter is a liquid.
Which state of matter can fill a container of any shape or size because of the constant motion of its particles? Example: Helium This state of matter is a gas.
What type of energy do objects have because of their motion? Objects have kinetic energy due to their motion.
Pressure The result of a force distributed over an area.
Absolute Zero A temperature of zero Kelvins
Chales' Law States that the volume of a gas is proportionate to its temp. in Kelvins if the pressure and number of particles of gas are constant.
Boyle's Law States that the volume of a gas is inversely proportional to its pressure if the temp. and number of particles are constant.
Phase Change The reversible physical change that occurs whena substance changes from one state of matter to another.
Endothermic The change where a system absorbs energy from its surroundings.
Heat of fusion The amount of energy absorbed during a phase change that varies from substance to substance.
Exothermic The type of change when a system releases energy to its surroundings.
Vaporization The phase change where a substance changes from a liquid to a gas.
Heat of Vaporization The amount of energy absorbed when a liquid changes to a gas.
Evaporation The process that changes a substance from a liquid to a gas at temp.s below the boiling point.
Vapor Pressure The pressure caused by the collisions of vapor during vaporization.
Condensation The phase change in which a substance changes from GAS OR VAPOR TO A LIQUID.
Sublimation The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first.
Deposition The phase change where a gas or vapor changes into a solid without changing into a liquid first.
Created by: Emilyw22
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