| A | B |
|---|
| AMU | Atomic Mass Unit or the unit used to measure the masses of subatomic particles. |
| Atomic Mass | This is the number of protons and neutrons. |
| Atomic Number | This is the number of protons. |
| Electron Cloud | Area outside the atomic nucleus where the probability of finding electrons is high. The cloud model emphasizes the electron is not in a fixed orbit or distance from the nucleus center. |
| Element | This is a substance that cannot be broken down further by chemical means. |
| Energy Level | The possible state for an electron of an atom that is proportional to its distance to the nucleus. |
| Isotope | Atoms of the same element with varying number of neutrons. |
| Metalloid | One of a class of elements having properties intermediate to metals and nonmetals |
| Metals | This is a group of elements with few valence electrons that conducts heat and electricity. |
| Neutron | This is a subatomic particle with no charge and a mass of 1 amu. |
| Noble Gas | This is an element with full valence shell, very unreactive. |
| Nonmetal | This is an element that has many valence electrons, not a conductor |
| Nucleus | This is a group of protons and neutrons in the center of all atoms. |
| Periodic Table | An arrangement of elements into rows and columns according to similarities in their properties |
| Proton | This is a subatomic particle with a positive charge and a mass of 1 amu |
| Solute | The substance that is being dissolved by a solvent |
| Solvent | The substance that dissolves the solute |
| Solution | This is a physical combination of one substance dissolved in another |
