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GEHS Atoms
| Question | Answer |
|---|---|
| Positively charged subatomic particle | proton |
| Negatively charged subatomic particle | electron |
| Sub atomic particle without a charge | neutron |
| dense center part of the atom | nucleus |
| electrons move around the nucleus on | energy levels |
| Number of protons | atomic number |
| number of protons + neutrons | atomic mass |
| atom with a charge | ion |
| ions occur because ________ are either gained or lost | electrons |
| electrons on the outermost energy level | valence electrons |
| the "magic" number in chemistry | eight |
| the number of protons must equal the number of ____________ | electrons |
| rows on the periodic table which tell us the number of energy levels of an atom | periods |
| very reactive family of metals with 1 valence electron | alkali metals |
| group of non metals which generally do not bond with other elements | noble gases |
| Very reactive group of non metals that need one electron | halogens |
| group of metals in the middle of the periodic table that don't follow the rules | transition metals |
| only non metal on the left hand side of the periodic table | hydrogen |
| only noble gas with 2 valence electrons | helium |
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GEHS
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