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4 Cards in this Set
- Front
- Back
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Covalent Bonds |
-sharing of outermost electron -sharing of single pair of electrons: single bond (-), double bond (two pairs) (=) -solid line = covalent -dashed line = shared pair of electrons |
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Polar/nonpolar covalent bonds |
-Larger oxygen atoms draws helium electrons around it majority of time a) oxygen partial (-) charge b) helium partial (+) charge -Polar molecule = unequal charge distribution (hydrophilic) -Nonpolar molecule = equal charge distributuion (hydrophobic) |
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Ionic bonds |
-Attraction between charged atoms (ions) held together by opposite charges -Example: NaCl (Na atomic # = 11, Cl atomic # = 17) a) Na loses electron--> Na(+) b) Cl gains electron--> Cl(-) |
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Hydrogen Bonds |
- -When a hydrogen is covalently attached to a nitrogen or an oxygen and is attracted to another nitrogen or oxygen a) hydrogen bonds are always shown as dashed lines |
