campbl03 - Bridge, W. Rep. Georgia Bridge, Detail of...

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Bridge, W. Rep. Georgia
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Bridge, Detail of Railing
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H 2 O Polar Covalence
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H 2 O Bent Geometry Methane: Replace C with O and 2xH with 2xElectron Pairs and you have Water ! O H H H H H H C
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H 2 O Hydrogen Bonding
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H 2 O Properties from H Bonds Water molecules adhere to other molecules (adhesion) Liquid water effects hydrophobic exclusion Liquid water has high specific heat Liquid water has high heat of vaporization Water molecules adhere to each other (cohesion) Water is a liquid rather than gas at room temperature Ice Floats Liquid water Is a powerful polar solvent
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Hydrophilic/Hydrophobic Hydrophilic = Water Loving These are things that like to dissolve in or be wet by water Typically these things have polar bonds or full charges Hydrophobic = Water Hating Things that do not like to dissolve in or be wet by water Typically these things lack polar bonds or full charges For example, hydrocarbons are hydrophobic, e.g., oils
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Adhesion—Hydration Shells
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This note was uploaded on 06/03/2011 for the course BIO 113 taught by Professor Swenson during the Spring '08 term at Ohio State.

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campbl03 - Bridge, W. Rep. Georgia Bridge, Detail of...

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