| A | B |
|---|
| states of matter | the physical forms of matter, which include solid, liquid, and gas |
| solid | the state of matter in which the volume and shape of a substance are fixed |
| liquid | the state of matter that has a definite volume but not a definite shape |
| surface tension | the force that acts on the surface of a liquid and that tends to minimize the area of the surface |
| viscosity | the resistance of a gas or liquid to flow |
| gas | a form of matter that does not have a definite volume or shape |
| temperature | a measure of how hot (or cold) something is; specifically, a measure of the movement of particles |
| volume | a measure of the size of a body or region in three-dimensional space |
| pressure | the amount of force exerted per unit area of a surface |
| Boyle's law | the law that states that the volume of a gas is inversely proportional to the pressure of a gas when temperature is constant |
| Charles's law | the law that states that the volume of a gas is directly proportional to the temperature of a gas when pressure is constant |
| change of state | the change of a substance from one physical state to another |
| melting | the change of state in which a solid becomes a liquid by adding energy |
| evaporation | the change of a substance from a liquid to a gas |
| boiling | the conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure |
| condensation | the change of state from a gas to a liquid |
| sublimination | the process in which a solid changes directly into a gas |
