| A | B |
|---|
| Matter | anything that has mass and takes up space. |
| Atoms | tiny particles that make up matter. |
| Elements | made up of one atom and cannot be broken physically. |
| Protons | particles that a positve electric chrage. |
| Neutrons | Have no electric charge. |
| Electrons | have a negative electric charge. |
| Atomic number | number of protons in an element. |
| Mass number | equaly to the number of protons and neutrons in an element. |
| Isotopes | Atoms of the same element with different #s of neutrons. |
| Compound | Contains elements of more than one type. |
| Molecule | group of atoms combined by a covalent bond. |
| Ions | Electrically charged atoms. |
| Mixture | two or more substances that are not chemically combined. |
| Heterogenous Mixture | Not mixed evenly and each component retains its own properties. |
| Homogeneous mixture | evenly mixed throughout. |
| Solution | another name for homogeneous mixture and invloves liquids/ |
