lecture 4 - Water is a polar molecule Polarity allows water...

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1 Water is a polar molecule Polarity allows water molecules to form hydrogen bonds with each other Hydrogen bonds Life takes advantage of water’s chemical properties partial negative charge near oxygen O - atom and partial positive charge near hydrogen H + atoms Æ water: Cohesive behavio behavior Ability to retain heat Versatility as a solvent Chemically versatile Hydrogen bonds link neighboring water molecules giving water cohesion Creates high surface tension difficult to break the surface of liquid difficult to the surface of liquid if molecules are more attracted to each other than to surrounding air molecules
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2 Heat capacity is high can absorb a large amounts of heat with only a small increase in its own temperature large number of hydrogen bonds in water bonds are broken as heat is absorbed instead of increasing temperature of water large amount of water in body helps lessen the impact of environmental changes in temperature
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This note was uploaded on 09/29/2011 for the course BIO 121 taught by Professor Pazymino during the Fall '08 term at UMass Dartmouth.

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lecture 4 - Water is a polar molecule Polarity allows water...

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