| Term | Definition |
|---|---|
| solid | matter that has a definite shape and definite volume |
| liquid | matter with a definite volume but no definite shape |
| viscosity | a measurement of a liquids resistance to flow |
| surface tension | the uneven forces acting on the particles on the surface of a liquid |
| gas | matter with no definite shape or volume |
| vapor | the gas state of a usually solid or liquid at room temperature |
| kinetic energy | the energy an object has due to its motion |
| temperature | a measure of the average kinetic energy of all particles in an object |
| thermal energy | the total potential and kinetic energies of an object |
| vaporization | the state of change from a liquid into a gas |
| evaporation | the vaporization that only occurs at the surface of a liquid |
| condensation | the change of a gas to a liquid |
| sublimation | the change of a solid to a gas without becoming a liquid |
| deposition | the change of gas to a solid without the liquid state |
