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16 Cards in this Set
- Front
- Back
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All living organisms require _____
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water
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Water has single, ____________________ bonds with 2 hydrogen atoms and 1 oxygen atom
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Polar covalent
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Water molecules stick together by ________________
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Hydrogen bonding (Tetrahedral shake)
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What property is important to plants?
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Cohesion and surface tension
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How is water a moderator
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1) can absorb and release heat
2) Water has a high specific heat and high heat of vaporization 3) Water resist temperature changes 4) Coastal environments are more temperament 5) Water has evaporative cooling |
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Properties of solid water
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Less dense than liquid, creates lattice structure, and important for deep water survival.
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_________ is a universal solvent [Almost] because
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Water
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Water makes _________ solutions
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Aqueous
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Man _______ _______ use water
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biological solutions
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Water hating, ionic and polar molecules
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Hydrophobic
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Water loving, non ionic and non polar molecules
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Hydrophilic
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Water dissociation
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Water can strip a hydrogen molecule from another water
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H20 +H20 ------->
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(H30 + OH-) or (OH- + H-) Reversible reaction and can be permanently changed by some acids and bases
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A measure of the H+ concentration or (-log [H+])
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pH. Acids increase H+ concentrations and bases increase OH- concentrations
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pH Scale
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1-6 Acid, 7 Neutral, and 8-14 Base
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_______ are biological fluids that resist pH changes
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Buffers
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