| A | B |
|---|
| Density | Amount of matter in a given volume |
| States of Matter | Physical form a substance can exist |
| Solid | Form of matter with difinite volume and shape |
| liquid | form of matter with definite volume but takes the shape of its container |
| gas | form of matter with no definite shape or volume |
| surface tension | a force on the surface of liquids |
| viscosity | a liquid's resistance to flow |
| melting | change of state from a solid to a liquid |
| evaporation | change of substance from a liquid to a gas |
| sublimation | change of substance from a solid directly to a gas |
| condensation | change of a gas to a liquid |
| closed system | a system in which nothing can enter or leave |
| chemical change | change in which a substance changes into a brand new substance with different properties |
| physical change | change in matter without a change in chemical properties |
