| A | B |
|---|
| states of matter | Any of the four conditions in which matter can exist |
| kinetic theory of matter | all matter is made up of constantly moving, tiny particles |
| crystals | the arrangement of particles in repeating geometric patterns |
| plasma | a gaslike mixture of positively and negatively charged particles |
| thermal expansion | matter expands when heated and contracts when cooled |
| polluted water | water that contains unwanted materials |
| thermal pollution | excess heat in water |
| evaporation | the change of a substance from a liquid to a gas |
| condensation | the change of a substance from a gas to a liquid |
| heat of fusion | energy needed to change a material from a solid to a liquid |
| heat of vaporization | energy needed to change a material from a liquid to a gas |
