Flashcards: Physical Science ch 2 sec 4
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Created by:
lesliesmll on February 7, 2012
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Terms | Definitions |
|---|---|
 melting | the change of state from a solid to a liquid |
| melting point | specific temperature in which a substance changes from solid to liquid; particles of a solid are vibrating so fast that they break free from their fixed positions |
| freezing | change in state from liquid to solid; particles of liquid are moving so slowly that they begin to form regular patterns |
| vaporization | change from a liquid to gas; takes place when particles in a liquid gain enough energy to form a gas |
| types of vaporization | evaporation boiling |
| evaporation | type of vaporization that takes place only on the surface of the liquid |
| boiling | type of vaporization that takes place on the surface AND below the surface of a liquid |
| boiling point | temperature at which a liquid boils depends on the air pressure of the air above it - the lower the air pressure, the less energy is required to boil |
| condensation | changes from gas to liquid; occurs when particles in a gas lose enough energy to form a liquid |
| sublimation | particles of a solid gain enough energy to form a gas without passing through the liquid state |