| A | B |
|---|
| kinetic theory | an explanation for how molecules behave |
| melting point | the temperature at which a solid becomes a liquid |
| boiling point | the temperature at which a liquid becomes a gas |
| heat of fusion | the energy amount required fro a solid to become a liquid |
| heat of vaporization | the energy amount required for a liquid to become a gas |
| diffusion | the spreading of particles evenly throughout a substance with no outside help |
| solid | state of matter that has definite volume and shape |
| liquid | state of matter that has definite volume but not shape |
| gas | state of matter that has no definite volume or shape |
| plasma | state of matter that is most common, made up of positives and negatives |
| thermal energy | Total amount of kinetic energy available in a material |
| thermal expansion | the contraction and expansion of a material due to adding or taking away kinetic energy |
| kinetic energy | energy in the form of motion |
| temperature | average kinetic energy of an object |
