| A | B |
|---|
| atom | The smallest unit of an element that has all the properties of that element |
| molecule | made up of tow or more atoms joined together |
| element | A substance made up of only one kind of atom |
| change of state | A physical change that occurs when matter changes from one state to another, sucha as from a liquid to a gas |
| physical change | A change in matter from one form to another that doesn't result in a different substance |
| physical property | A property that involves a substance by itself |
| chemical property | A property that involves how a substance interacts with other substances |
| chemical change | A reaction or change in a substance produced by chemical means, that results in a different substance |
| chemical reaction | A chemical change |
| compound | A substance made of two or more different elements |
