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Unformatted text preview: oxygen nucleus. .. Therefore weak zones of charge exist d. Ionic Bonds e. Hydrogen bonds f. Hydrophobic interactions g. Vander Waals interactions IV. H 2 O – “special properties” – sticky! H 2 O-high specific heat- amount of heat that must be absorbed or lost for 1 gram to change temp by 1 degree Celsius Why so high? H-bonding Heat must be absorbed to Heat released when H bonds form break before any change in temp. Upshot: H 2 O is a fairly stable environment Electronegativity: measured as dimensionless “pauling units” Likeliness to take e- from another element-Scale from .7 to 4.0 (H=2.2, C=2.55, O=3.44, F=3.98) It is a molecular as well as an atomic property Dissociation of water molecules...
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- Fall '07
- Atom, Molecule, Chemical bond, Life I. Atoms, water I. Atoms