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s8p1.c
the movement of particles in solidss, liquids,gases,and plasma states
| Term | Definition |
|---|---|
| state of matter | the physical form of matter, which include solid, liquid, and gas |
| solid | the state of matter in which the volume and shape of a substance are fixed |
| liquid | composed of molecules that move freely among themselves but do not separate like those of gases; neither gaseous nor solid |
| gas | a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a liquid or a solid |
| melting point | the temp at which a solid melts or fuses |
| vaporization | the rapid change of a liquid into a gas |
| boiling point | the temp in which the vapor pressure is equal to the pressure of the atmosphere on the liquid |
| condensation | the act of a gas changing back into a liquid |
| freezing point | the temp at which a liquid, a solid, or a gas freezes |
| sublimation | the process in which a solid changes directly into gas |
| phase change diagram | drawing that show the relationships among temp and changes of state |
| plasma | a highly ionized gas containing an approxmantly equal number of positive ions and electrons |