A | B |
solid | matter that has a definite volume and a definite shape |
liquid | matter that has a definite volume but no definite shape |
gas | matter that has no definite volume or shape |
melting | the change of state from a solid to a liquid |
evaporation | the change of state from liquid to a gas |
boiling | the rapid change of state from liquid to a gas |
condensation | the change of state from a gas to a liquid |
freezing | the change of state from a liquid to a solid |
phases of matter | any of the three forms that matter may ordinarily take: solid, liquid and gas |
particles in a gas |  |
particles in a liquid |  |
particles in a solid |  |