| A | B |
|---|
| adhesion | force of attraction between unlike bodies that holds 2 things together |
| gas | state in which matter does not have a definite shape or a definite volume |
| Boyle's Law | volume of a fixed amount of gas at a constant temperature increases as its pressure decreases - OPPOSITES |
| Charles' Law | if temperature of a gas increases volume increases |
| physical change | change in physical properties but not in the matter of a substance |
| phase change | changing of a substance from one phase to another |
| melting | changing of a substance from a solid to a liquid |
| heat of fusion | amount of heat required to melt a particular substance |
| freezing | changing of a substance to a solid from a liquid |
| vaporization | changing of a substance from a liquid to a gas |
| evaporation | vaporization at the surface of a liquid |
| boiling | fast vaporization throughout the liquid |
| heat of vaporization | amount of heat required to vaporize a certain amount of a substance |
| condensation | changing from a gas to a liquid |
| sublimation | changing from a solid directly to a gas |
| chemical change | change that occurs when a substance changes into an entirely different substance with different properties |
| combustion | burning of substance |
| oxidation | chemical change when a substance combines with oxygen |
