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13 Cards in this Set
- Front
- Back
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Chemical bonds
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strong force of attraction btwn. atoms
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Ionic bonds
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donation of electrons btwn. m+nm
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Compounds
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collection ionic bonds
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Covalent bonds
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shareing of elect. btwn. nm+nm
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molecules
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collection of covalent bonds
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structual formulas
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2-D representation of bonding of ionic or covlent substances
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Lewis dot struct.
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represents ionic/cov. subs.
w/ dashes (bonds) dots (electrons) element symbols |
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Electronegativity
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diff. represents shareing of electrons
- greater diff. more un= shareing 0-0.4= non-polar bond, 0.5-2.0 polar bond region, 2.0-4.0 ionic |
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polar covalent bonds
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unequal shareing electrons ex. HCl 2.1-3.0 =0.9
dipole right |
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Resonance structures
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same structula formula diff. bonds or loin pairs
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reduced octet
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only need 2,4,6 electrons to be complete H, Bo, B
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expanded octet
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Can hold more than 8... 10,12
only elements n=3(3rd per.) Si, P S, As, Kr, Xe |
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Vsepr- Valence shell electron
pair repulsion Theory |
electrons try to move as far from each other as they can
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