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Atoms
| Term | Definition |
|---|---|
| Proton | Positive particle in the atom |
| Electron | Negative particle in the atom |
| Neutron | Neutral particle in the atom |
| Nucleus | Center of the atom with protons and neutrons |
| Electron shells | Where electrons are kept in the Bohr Models |
| Valence electrons | Outermost electrons in an atom |
| Atomic Number | The number of protons OR electrons |
| Atomic Mass | The number of protons + neutrons |
| Two | The number of electrons that can fit in the first electron shell |
| Family | A group of elements that react similarly to each other |
| Alkali Family | Family members are Li, Na, K, Rb, and Cs |
| Alkaline Earth Family | Family members are Be, Mg, Ca, Sr, and Ba |
| Halogens Family | Family members are F, Cl, Br, I, and At |
| Noble Gases Family | Family members are He, Ne, Ar, Kr, Xe, and Rn |