| A | B |
| matter | takes up space and has weight |
| gas | takes up whatever space is available |
| solid | definite shape |
| liquid | takes shape of its contatiner |
| physical change | changes state but stays the same substance |
| chemical change | a new substance is formed |
| property | characteristic of something |
| atom | basic unit of all life |
| molecule | atoms joined together |
| heat | what is added or taken away to change states |
| volume | amount of space something occupies |
| shape | external form |
| conductivity | how it lets electricity flow through |
| luster | how it shines |
| texture | how it feels |
| density | has close together things are |
| evaporation | liquid changes to a gas |
| condensation | gas changes to a liquid |