| A | B |
| mixture | combination of matter |
| element | substance not able to break down |
| atom | smallest part of an element |
| compound | two or more elements |
| reactant | substances that react |
| products | substances formed from reactions |
| chemical symbol | a type of abbreviation |
| chemical formula | chemical symbols grouped together |
| chemical reaction | elements or compounds changed into something else |
| mono- | one |
| di- | two |
| tri- | three |
| tetra- | four |
| -ide | suffix added to root name of second element in a compound |
| -ate | suffix added if second element is oxygen |