| Term | Definition |
|---|---|
| atom | The smallest part of an element that still has the properties af an element. |
| atomic theory | The idea that everything is made of small particles. |
| compound | A type of matter made up of two or more elements. |
| molecule | The smallest part of a(n) compound that still has the properties of a(n) element. |
| solid | A substance that has a definite shape and volume. |
| liquid | A substance that has a definite volume but no definite shape. |
| gas | A substance without a definite shape or volume. |
