| A | B |
| States of matter | solid, liquid, gas, plasma |
| Kinetic theory of matter | tiny particles in constant motion make up all matter |
| crystal | a solid where the particles are arranged in repeating geometric patterns |
| amorphous solid | noncrystalline material like glass and plastic |
| plasma | most common state in universe, gaslike mixture |
| thermal expansion | most matter expands when heated, contracts when cooled |
| evaporation | liquid changes to a gas at temperature below boiling |
| condensation | gas changes to a liquid |
| heat of fusion | the amount of energy needed to change a material from a solid to a liquid |
| heat of vaporization | the amount of energy needed to change a liquid to a gas |
| pressure | amount of force exerted per unit of area |
| pascal | SI unit of pressure |
| Boyle's Law | if you decrease the volume of the gas container, the pressure will increase |
| Charles's Law | the volume of a gas increases with increasing temperature |
| buoyant force | the ability of a fluid to exert an upward force on an object immersed in it. |
| Archimedes' Principle | the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object |