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Chap.3 Vocab.
Term | Definition |
---|---|
Solid | The state of matter in which materials have a definite shape and a definite volume. |
Liquid | the state of matter in which a material has a definite volume but not a definite shape. |
Gas | the state of matter in which a material has neither a definite shape nor a definite volume. |
Kinetic Energy | the energy an object has due to it's motion. |
Pressure | The result of a force distributed over an area. |
Absolute Zero | a temperature of 0 kelvins |
Carles's Law | the direct proportion of the volume of a gas to its temperature (in kelvins) if the pressure and the number of particles of the gas are constant. |
Boyle's Law | the inverse variation of the volume of a gas with its pressure if the temperature and the number of particles are constant. |
Phase Change | A reversible physical change that occurs when a substance changes from one state of matter to another. |
Endothermic | a description of a change in which a system absorbs energy from its surroundings. |
Heat of Fusion | the energy a substance must absorb in order to change from a solid to a liquid. |
Exothermic | a description of a change in which a system releases energy to its surrounding. |
Vaporization | the phase change in which a substance changes from a liquid into gas. |
Heat of Vaporization | the energy a substance must absorb in order to change from a solid to a liquid. |
Evaporation | the process that changes a substance from a liquid to a gas at temperatures below the substance's boiling point. |
Vapor Pressure | the pressure caused by the collisions of particles in a vapor with walls of a container. |
Condensation | the phase change in which a substance changes from a gas or vapor to a liquid. |
Sublimation | the phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first. |
Deposition | the phase change in which a gas or vapor changes directly into a solid without first changing into a liquid; the placement of sediment that has been transported from another location. |