| Term | Definition |
|---|
| Parts of an Atom | Protons, Neutrons, and Electrons |
| Protons | Positively charged particles |
| Neutrons | Neutrally charged particles |
| Electrons | Negatively charged particles |
| What are valence electrons | The electrons in the outermost shell of an atom |
| What are valence electrons used for | Bonding by sharing or tranferring these electrons |
| What is an isotope | An atom with the same number of protons, and different numbers of neutrons |
| What is an ion | Atom that has gained or lost electrons making it negatively or positively charged |
| Atomic Number | The number of protons in an atom |
| How is atomic mass calculated | Add protons and neutrons together |
| Characteristics of metals | Shiny, ductile, malleable, conducts heat and electricity |
| Characteristics of metalloids | Good semiconductors |
| Characteristics of non-metals | Lower densities than metals, dull, brittle |
| Characteristics of inert (noble) gases | Does not react with other elements, full electron energy levels |
| How many valence electrons fill up the first shell | 2 |
| How many valence electrons fill up each shell after the first | 8 |
| What is an electron dot diagram (Lewis Dot Structure) | A diagram that shows the number of valence electrons around the element symbol |
| Atomic Mass | Total weight (mass) of the atom |
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