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27 Cards in this Set
- Front
- Back
- 3rd side (hint)
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John Dalton |
Billiard ball model |
First Atomic Theory |
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Dalton Atomic Theory |
All matter is made of tiny particles called atoms |
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J. J. Thompson |
Raisin/plum pudding Method |
Birth of electron |
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Rutherford |
Gold foil experiment. Led to planetary model. |
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James Chadwick |
Discovered neutrons |
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Atom |
Made of proton p+ neutron n 0 and electron e- |
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How to calculate neutrons |
Mass number - atomic number |
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Calculate electrons |
Electrons= protons or atomic number |
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Isotope |
Atoms of the same element that have diffrent numbers of neutrons. |
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Calculate atomic mass abundance |
Element weight X abundance % Answer in AMU |
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Group I |
Alkali Metals 1 valence electron |
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Group II |
Earth Metals 2 Valence electron |
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Group III-XII |
Transition Metals |
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Metalloids |
both metal and non-metal |
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Group XIII |
Boron Family |
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Group XV |
Nitrogen Family |
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Group XVI |
Oxygen Family |
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Halogen Family |
Group XVII |
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Group XVIII |
Noble Gas |
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Atomic Radius |
Increase down a group Decrease across a period |
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Ionization Energy |
Amount of energy required to remove the outmost electron. Decreases down a group Increases across a period |
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Electronegativity |
attraction of an atom in a compound for an electron. Decrease down group Increase across |
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Electron Affinity |
Energy change that occurs when an atom gains an electron. Decreases down a group Increases across a period |
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Ionic Bonding |
bond between 1.8 and 3.3 electronegativity |
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Polar Covalent |
bond between 0.6 and 1.7 electronegativity |
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Covalent Bonding |
bond up to 0.5 electronegativity |
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Noble Gas Bonding |
Noble gas does not Ionize |
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