January 27 - Wednesday Bond Energy-amount of energy...

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Wednesday, January 27, 2010 Bond Energy -amount of energy contained in a bond that links 2 atoms together. The most convenient way to measure – break bond and measure released energy. Molecular Shape and Function -a molecule’s biological function is related to its shape In a covalent bond -the s and p orbitals may hybridize, creating specific molecular shapes Reaction Rate Temperature, Pressure, pH, catalysts, surface area, concentration Hydrogen bonding in water Properties of water -clings to polar molecules -temp. stabilization -denser as liq. Than solid -solvent of life Cohesion- water sticking Adhesion- attraction b/w water & plant cell walls . Attraction b/w diff substances. Surface tension -measure of how hard it is to break the surface of a liquid Temperature Stabilization -water stabilizes air temperatures:
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-absorbs heat from warmer air -releases heat to cooler air -water has high specific heat Advantages of high specific heat
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