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krodriguezScience2
Topic 2 Vocabulary
| Term | Definition |
|---|---|
| solid | have a definite shape and definite volume |
| liquid | have no definite shape but they have a definite volume |
| surface tension | the inward force among molecules in a liquid that brings the molecules on the surface closer together |
| viscosity | resistance to flowing |
| gas | neither a definite shape nor volume (particles do not remain in contact with each other) |
| thermal energy | the total kinetic (energy of motion) and potential energy (stored energy) in an object or substance |
| temperature | a measure of the average kinetic energy of the particles in a substance or object |
| melting point | melting that occurs at a specific temperature |
| freezing point | the temperature at which a substance changes from a liquid to a solid |
| vaporization | the change in state from a liquid to a gas |
| boiling point | the temperature at which a liquid boils |
| evaporation | vaporization that takes place only on the surface of a liquid |
| condensation | the change in state from a gas to a liquid (opposite of vaporization) |
| sublimation | the surface particles of a solid gain enough energy that they form a gas, not passing through the liquid state |
| pressure | the force pushing on a surface divided by the area of that surface |
| Charles's Law | a principle that describes the relationship between the temperature and volume of a gas at constant pressure (directly proportional) |
| Boyle's Law | a principle that describes the relationship between the pressure and volume of a gas at constant pressure (inversely related) |