Properties_water

Properties_water - and animals. Water resists temperature...

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2 Hydrogen bonding
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3 Surface tension
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4 Ice, water, vapor
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5 Hydrogen bonding (electric attraction) Ice Liquid
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6 Water-soluble protein
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7 “Dissociation” of water
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8 pH pH = – log [H+] Log scale means 10X change per unit! [H+]= 10 -1 M [H+]= 10 -9 M
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9 Buffers Buffers resist changes to the pH of a solution when H + or OH - is added to the solution. Buffers accept hydrogen ions from the solution when they are in excess and donate hydrogen ions when they have been depleted.
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10 Overall lessons: Many properties of water are emergent properties due to hydrogen bonding. The cohesion of water molecules to each other is exploited by plants
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Unformatted text preview: and animals. Water resists temperature changes by absorbing lots of heat. Lower density of ice causes it to float & insulate the water below. The polarity of water allows it to dissolve other polar molecules. Non-polar compounds are hydrophobic and not easily dissolved in water. A mole of a compound has a constant # of molecules. Adding or removing hydrogen ions changes the pH of a solution. Buffers resist pH changes by accepting or donating H ions when [H+] changes....
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This note was uploaded on 11/09/2011 for the course BIO 110 taught by Professor Harmon during the Winter '11 term at BYU.

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Properties_water - and animals. Water resists temperature...

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