| A | B |
|---|
| Solid | Definite shape and volume; particles move but are in a fixed position |
| liquid | A state of matter that has no definite shape but has a definite volume. It takes on the shape of the container it's in. |
| Gas | A state of matter with no definite shape or volume. Takes on the shape and volume of the container it is in. |
| Evaporation | Liquid to gas, a gain in energy |
| Condensation | gas to a liquid, a lose in energy |
| Freezing | liquid to solid, a lose in energy |
| Melting | solid to liquid, a gain in energy |
| Sublimation | the process in which a solid changes directly into a gas without melting, a gain in energy |
| Deposition | when a gas goes directly to a solid, a lose in energy |
| conductor | A material that allows heat and electricity to pass through it. |
| Insulator | A material that does not allow heat or electrons (electricity) to move through it easily. |
| heat transfer | the movement of energy from a warmer object to a cooler object |
| state of matter | solid, liquid, gas |
| Equilibrium | a state in which opposing forces or influences are balanced. |
| closed system | a system in which matter and energy exchanges do not occur across boundaries |
| heat flow | the transfer of energy from a warmer object to a cooler object until both objects become the same temperature (equilibrium) |
| heat | The energy transferred between objects that are at different temperatures |
| Temperature | A measure of the average energy of motion of the particles of a substance. |
