| A | B |
|---|
| Weight | Pull of gravity on an object. Changes from place to place.Common unit is the Newton. |
| Mass | Amount of matter in an object. Common unit is the gram. |
| Length | Distance from one place to another. Measure in Meters, Centimeters etc. |
| Volume | Amount of space an object takes up. Common unit is the Liter. |
| Density | How tightly packed the particles of a substance are. Found using the formula Density equals mass divided by volume. |
| Boyles Law | States that the volume of a gas changes inversly with pressure on the gas. |
| Charles Law | States that the volume of a gas varies directly with temperature. |
| Gas Phase | The phase of matter that contains the most amount of energy. Molecules are farthest apart. Has no definite shape or volume. |
| Liquid Phase | Phase of matter that has more energy than a solid but less energy than a gas. Has no definite shape, but does have a definite volume. |
| Solid Phase | Phase of matter that has the least amount of energy. Has a definite shape and definite volume. |
| Freezing | Change from liquid to solid. Decrease in energy. |
| Melting | Change from solid to liquid. Increase in energy. |
| Vaporization | Change from liquid to gas. The two methods of vaporization are evaporation and boiling. |
| Evaporation | Vaporization at the surface of a liquid. Increase in energy. |
| Boiling | Change from liquid to a gas throughout every layer of the liquid. Requires more energy than evaporation. |
| Condensation | Change from gas to liquid. Decrease in energy. |
| Sublimation | Change directly from solid to gas. Increase in energy. |
| Deposition | Change directly from gas to solid. Decrease in energy. |
| Physical Change | Change in matter that does not change the make up of the matter. Examples: Color, shape, size, phase, dissolving in water. |
| Chemical change | Change in matter where a new substance is created. Examples: Burning, rusting, tarnishing, digestion, respiration. |
