| A | B |
| states of matter | the physical forms In which a substance can exist; states include solid, liquid, gas, and plasma |
| solid | the state in which matter has a definite shape and volume |
| liquid | the state in which matter takes the shape of its container and has a definite volume |
| gas | the state in which matter changes in both volume and shape |
| Plasma | the state of matter that does not have a definite shape or volume and whose particles have been broken apart- each part with a net electrical charge |
| pressure | the amount of force exerted on a given area |
| Boyle's law | the law that states that for a fixed amount of gas at a constant temperature, the volume of a gas increases as its temperature increases |
| Charles's law | the law that states that for a fixed amount of gas at a constant pressure, the volume of a gas increases as its temperature increases |
| change of state | the conversion of a substance from on ephysical state to another through the addition or loss of energy |
| melting | the change of state from a solid to a liquid; happens at same temperature as melting |
| freezing | the change of state from a liquid to a solid, happens at same temperature as melting |
| vaporization | the change of state from a liquid to a gas; includes boiling and evaporation |
| boiling | vaporization that occurs throughout a liquid |
| evaporation | vaporization that happens at the surface of a liquid below its boiling point |
| condensation | the change of state from a gas to a liquid |
| sublimation | the change of state from a solid directly to a gas; opposite of deposition |
| deposition | the change of state from a gas directly to a solid |
| ionization | the change of state from a gas to ion |
| recombination | the change of state from ion to gas |