lecture15222
DESCRIPTION
a supplemental resource for studentsTRANSCRIPT
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Liquid and Solid States:
the Uniqueness of Water
Lecture 15
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The principal substance
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Water on Mars
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Colors are traditional
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Colors are traditional
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H2O as a source of inspiration
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H2O as a source of inspiration
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In what the uniqueness?great solvent properties due to polarity and hydrogen bonding ability;exceptional high specific heat capacity;high surface tension and capillarity;density differences of liquid and solid states.
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Bent molecular shape
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Unique solvent properties of waterresult from its polarity and
exceptional H-bonding ability.
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Unique thermal properties of waterresult from its exceptionally high specific heat capacity and heat of vaporization.
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Hydrogen bonds in oceans
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Unique surface properties of waterare high surface tension and
high capillarity. These result from abundant H-bonds.
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Capillary action of water
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Density differences of liquid and solid
states of waterresult from large spaces
within ice.
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Ice is lighter
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Snow crystals
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Snow crystals
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THE END