| Term | Definition |
|---|
| vaporization | process in which liquid turns to gas with heat energy |
| evaporation | change of a substance from liquid to gas without using heat |
| surface tension | force that acts on the surface of a liquid and minimizes the area of the surface |
| melting point | temperature and pressure at which a solid becomes a liquid |
| liquid | state of matter with definate volume, but indefinite shape |
| solid | state of matter with a definate volume and a definite shape |
| equilibrium | chemical reaction and reverse reactions occur at the same rate |
| [delta]H (vap) | heat needed to change one mole of liquid to gas |
| [delta]H (fus) | heat needed to change one mole of solid to liquid |
| boiling point | pressure and temperature at which liquid & gas in equilibrium |
| crystal | solid in a definate, arranged pattern |
| Le Chatlier's principle | if stress is placed on an equilibrium, then the equilibrium stress shifts |
| triple point | temperature and pressure at which all three states of matter are present |
| sublimation | process in which a solid changes directly into a gas |
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