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Phase Changes

.............................................. Ke-

TermDefinition
Altitude Vertical distance, or elevation, above sea level-
Boil Change from a liquid to a gas-
Boiling Point The temperature at which boiling occurs- At sea level, the boiling point of water is 100 °C (212 °F)-
Freeze Change from a liquid to a solid-
Freezing Point The temperature at which freezing occurs- At sea level, the freezing point of water is 0 °C (32 °F)-
Gas A phase in which matter has no definite shape or volume-
Gas Properties Will expand to fill any container. Can be compressed; Molecules relatively far apart and move freely-
Water Vapor Water in the gas phase-
Liquid A phase in which matter has definite volume but no definite shape-
Liquid Properties Will take the shape of a container but cannot expand or be compressed; Molecules in a liquid move randomly but stay close to one another-
Melt Change from a solid to a liquid-
Melting Point The temperature at which melting occurs- At sea level, the melting point of ice is 0 °C (32 °F)-
Phase A state of matter with certain physical features-
Solid A phase in which matter has a definite shape and a definite volume-
Solid Properties Will retain the same shape and volume in any container; atoms are held in a rigid structure and cannot move freely-
Ice Water in the solid phase-
Thermal Energy Energy in the form of heat-
Vaporization Rapid change from liquid to gas-
Condensation Change from gas to liquid-
Sublimation Change from solid to gas-
Evaporation Slow change from liquid to gas-
Deposition Change from gas to solid-
Created by: WhiteHouse440
 

 



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