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Phase Changes

Vocabulary

TermDefinition
Altittude vertical distance, or elevation, above sea level.
Boil Change from a liquid to a gas.
Boiling Point
Condensation Change from liquid to gas.
Deposition Change from gas to solid.
Evaporation Slow change from liquid to gas.
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 to move freely.
Ice Water in a solid place.
Liquid A phase in which matter has definite volume but no definite shape.
Liquid Proproties 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°(32°F)
Phase A state of matter whit certain physical proprieties. • Solid, liquid, and gas phases occur naturally on Earth. • Plasma is a phase found in the stars.
Solid A phase in which matter has a definite shape and a definite volume.
Solid Properties Will remain the same shape and volume in any container; atoms are held in a rigid structure and cannot move freely.
Sublimation Change from solid to gas
Thermal Energy Energy in the form of heat
Vaporization Rapid change from a liquid to gas.
Water Vapor Water in gas phase.
Created by: e150015175
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