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Lecture 5 The Water Molecule

Lecture 5 The Water Molecule - Water Life Civilization Why...

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1 Water, Life, Civilization: Why Water? Water: H 2 O Water: H 2 O
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2 H H H H O S Water Hydrogen Sulfide Water and Similar Compounds H 2 S H 2 O Hydrogen Sulfide: H 2 S Water: H 2 O Boiling Point and Freezing Point F.P B.P liquid range Water (H 2 O) 0 o C 100 o C 100 o C Hydrogen Sulfide (H 2 S) -84 o C -60 o C 24 o C Hydrogen Selenide (H 2 Se) -64 o C -42 o C 22 o C Hydrogen Telluride (H 2 Te) -49 o C 2 o C 47 o C Water is the only substance that exists as a gas, solid, and liquid at ambient earth temperatures Solid Gas
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3 H 2 O Two hydrogen atoms One Oxygen atom What makes water so unusual? 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. Nucleus 1 Proton (+) 1 Electron (-) Hydrogen H
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