| A | B |
|---|
| Atom | The smallest building block of matter, that has all of the properties of the sample of matter |
| Element | One or more atoms of the same type that can only be broken down through nuclear reactions |
| Compound | A substance made of two or more different types of atoms bonded together |
| Substance | A type of matter that is classified as either an element or a compound |
| Matter | Anything that has mass and takes up space (has volume) |
| Mixture | A combination of two or more substances that are not chemically combined |
| Molecule | Groups of atoms held together by bonds, they can be similar or different |
| Homogeneous Mixture | A type of mixture that is the same throughout. |
| Heterogeneous Mixture | A type of mixture in which the different substances can easily be seen and separated |
