| A | B |
| viscosity | the resistance of liquid to flow |
| amorphous solid | a solid which loses its shape under certain conditions, like a candle or Oobleck |
| solid | has a definite shape and volume |
| liquid | has a definite volume, but no definite shape |
| gas | has no defined shape or volume |
| condensation | changes from a gas to a liquid, losing heat |
| evaporation | changes from a liquid to a gas, with the addition of heat |
| boiling | changes from a liquid to a gas because of heat |
| melting | changes from a solid to a liquid because of added heat |
| sublimation | changes directly from a solid to a gas, skipping the liquid phase |
| physical change | a change in which the appearance of a substance changes, but there is no change in the makeup of that substance |
| chemical change | a change in the chemical makeup of a substance, ex. burning |
| density | amount of matter in a certain area of space (mass/volume) |
| inertia | the resistance of an object to move |
| all phase changes are. . . | physical |
| basic unit of mass | gram |
| basic unit of length | meter |
| basic unit of volume | liter |
| Boyle's Law | when pressure is increased, volume decreases (indirect proportion) |
| Charles' Law | when temperature is added, volume increases (direct proportion) |