|
 Matter | Anything that occupies space and has mass |
| Element | It is pure substance made up of only one type of atom. |
| Compound | It is a pure substance that contains two or more elements chemically combined in a fixed ratio |
| Simple substance | It is a compound made up of the same type of atom |
| Atom | It is the smallest particle of an element |
| Chemical formula | It indicates the number and types of atoms in a molecule |
| Solution | Homogeneous mixture that has the same properties at all its parts and its components cann´t distinguised. |
| Heterogeneous mixture | It has not the same properties at all its parts, and its components can be distinguised easily |