Lecture 5 The Water Molecule

Lecture 5 The Water Molecule - Water, Life, Civilization:...

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Water, Life, Civilization: Why Water?
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Water: H2O
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Water: H2O
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H H H H O S Water Hydrogen Sulfide Water and Similar Compounds H2S H2O
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Hydrogen Sulfide: H2S Water: H2O
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Boiling Point and Freezing Point F.P B.P liquid range Water (H2O) 0oC 100oC 100oC Hydrogen Sulfide (H2S) -84oC -60oC 24oC Hydrogen Selenide (H2Se) -64oC -42oC 22oC Hydrogen Telluride (H2Te) -49oC 2oC 47oC Water is the only substance that exists as a gas, solid, and liquid at ambient earth temperatures Solid Gas
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H2 O Two hydrogen atoms One Oxygen atom What makes water so unusual?
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Hydrogen: 1 electron (-), 1 proton (+) Oxygen: 8 electrons (-), 8 protons (+) In water, the hydrogens shares their one electron with oxygen, which shares one of its electrons with each hydrogen. This sharing of electrons forms the bond between hydrogen and oxygen atoms to make the water molecule.
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Nucleus 1 Proton (+) 1 Electron (-) Hydrogen H
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Oxygen O 8 electrons e - e - e - e - e - e - e - e - Outer shell 8 protons The outer shell of electrons determines reactivity
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Oxygen O e - e - e - e - e - Outer Shell e - Atoms prefer 8 electrons in the outer shell e - e -
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How does oxygen exist in the atmosphere?
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This note was uploaded on 07/31/2011 for the course SOS 2007 taught by Professor Dr.jamesbonczek during the Summer '07 term at University of Florida.

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Lecture 5 The Water Molecule - Water, Life, Civilization:...

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