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Solids
• Has a stable, definite shape • Has a definite volume• Particles are packed closely
together • Cannot move freely, can only
vibrate • Energy and temperature are very
low • Can only change their shape by
force
Liquids
• Does not have a definite shape • Shape is determined by the
container in which it is held• Volume is definite • Particles are farther apart than in
solids, and can slide past each other easily
• Energy and temperature, in comparison to a solid, are higher
Gases
• Has an indefinite, unstable shape• Volume is determined by the
container that is closely sealed • Particles are far apart from each
other, and can move around quickly
• Energy and temperature are the higher than those of both solids and liquids
Phase ChangeDescription of Phase Changes
Term of Phase Change Heat movement during Phase Change
Solid to Liquid Melting Heat goes into the solid as it melts.
Liquid to Solid Freezing Heat leaves the liquid as it freezes.
Solid to Gas Sublimation Heat goes into solid as it sublimates.
Phase ChangeDescription of Phase Changes
Term of Phase Change
Heat movement during Phase Change
Liquid to Gas Vaporization, which includes boiling and evaporation
Heat goes into the liquid as It vaporizes.
Gas to Liquid Condensation Heat leaves the gas as it condenses.
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