| A | B |
| solid | has its own shape and volume |
| liquid | takes shape of its container, has own volume |
| gas | no shape or volume of own |
| atom | smallest whole bit of an element |
| element | matter made of one kind of atom |
| molecule | smallest whole bit of a compound |
| compound | two or more atoms combined to make a new substance |
| mixture | substance that is easily separated |
| solution | a mixture of molecules that are evenly spread out |