| A | B |
|---|
| density | measure of how compact matter is |
| chemical reaction | the rearangement of atoms within molecules to make new molecules dif properties |
| compound | molecule that consists of 2 or more diferent elements |
| element | a substance that is made up of only 1 particular type of atom |
| model | a useful representation of something that aids in the studying subject further |
| chemical formula | group of chemical symbols and numbers |
| technology | the application of knowledge to accomplish a goal |
| molecule | 2 or more atoms joined together |
| free | free |
