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Chapter 3 Vocab.
| Term | Definition |
|---|---|
| solid | a substance with a definite shape and a definite volume |
| liquid | a substance with a definite volume but not a definite shape |
| gas | a substance with no definite volume nor a definite shape |
| kinetic energy | energy that a body possesses by virtue of being in motion |
| pressure | the continuous physical force exerted on or against an object by something in contact with it |
| absolute zero | It is zero on the Kelvin scale |
| Charles's law | The principle that the volume of a given mass of an ideal gas is proportional to its temperature as long as its pressure remains constant |
| Boyle's law | a statement in physics: the volume of a gas at constant temperature varies inversely with the pressure exerted on it |
| phase change | The states in which matter can exist: as a solid, liquid, or gas. When temperature changes, matter can undergo a phase change, shifting from one form to another |
| endothermic | accompanied by or requiring the absorption of heat |
| heat of fusion | heat required to melt a solid; specifically : the amount required to melt unit mass of a substance at standard pressure |
| exothermic | accompanied by the release of heat |
| vaporization | the conversion of a solid or a liquid into a gas |
| heat of vaporization | required to convert a unit mass of a liquid at its boiling point into vapor without an increase in temperature |
| evaporation | process of a liquid changing into a gas |
| vapor pressure | the pressure of a vapor in contact with its liquid or solid form |
| condensation | water that collects as droplets on a cold surface when humid air is in contact with it |
| sublimation | when anything solid turns into a gas without first becoming liquid |
| deposition | geological process in which sediments, soil, and rocks are added to a landform or land mass |