| A | B |
|---|
| matter | anything that has mass and occupies space |
| chemistry | the study of properties of matter and how matter changes |
| substance | a single kind of matter that is pure |
| physical property | a characteristic that can be observerd without changing it into something new |
| element | a pure substance that cannot be broken down by chemical or physical means |
| atom | the basic particle from which all elements are made |
| chemical property | a characteristic that describes its ability to change into a different substance |
| molecule | a neutral particl made of two or more atoms joined by covalent bonds |
