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Changes In State
Changes In State of Matter Unit 3 Lesson 2
Term | Definition |
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change of state | the change of a substance from one physical state to another |
pressure | the amount of force exerted per unit area of a surface |
temperature | a measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object |
thermal energy | the total kinetic energy of a substance’s particles |
condensation | the change of state from a gas to a liquid |
boil | a phase transition from the liquid state to the gas state; happens at 100 degrees Celsius at sea level |
evaporation | the change of state from a liquid to a gas that usually occurs at the surface of a liquid over a wide range of temperatures |
melt | change of a solid into a liquid when heat is applied |
deposition | the change of state from a gas directly to a solid; The process in which material is laid down |
sublimation | the change of state from a solid directly to a gas |
freeze | change of a liquid into a solid when heat is reduced |