Sw7 - Soil Water Movement Water Molecule Shared electrons Bond of shared electrons O H H O H H Shared electrons Electrons are negatively charged

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Soil Water Movement
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O H H Water Molecule O Shared electrons Bond of shared electrons H H Shared electrons
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O H H Electrons are negatively charged, protons positive Oxygen is “electron greedy” Oxygen pulls electrons toward itself and away from hydrogen e - e - e - e - e - e - e - e - This pulling of electrons toward itself is called “electronegativity” P+ P+ P+ P+
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+ + _ Red = lots of e - Blue = few e - Polarity + Electric Dipole
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- + Orientation Bond - Opposite charges attract each other (hydrogen bond)
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Hydrogen Bonding in Water Hydrogen Bonding Gives Water Unusual Stability
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Extensive Hydrogen Bonding Allows Water to exist as a Liquid at Normal Temperatures And across a wide range in temperatures Examples Unusual Density High Boiling and Freezing Points Other Unusual Thermal Properties Cohesion
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Heat Capacity When heat is added to water, the molecules speed up or vibrate more freely. This disturbs hydrogen bonds, but causes only a small change in temperature, because much of the heat energy is used to
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This note was uploaded on 02/04/2011 for the course SWS 3022 taught by Professor Bonczek during the Spring '11 term at University of Florida.

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Sw7 - Soil Water Movement Water Molecule Shared electrons Bond of shared electrons O H H O H H Shared electrons Electrons are negatively charged

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