Chapter 3 - Water

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7 Terms

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Buffers
\________ are essential for keeping pH levels in live cells generally constant.
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Acids
\________ raise the relative concentration of H+ ions in a solution, whereas bases raise the concentration of OH- ions in a solution.
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Biological systems
\________ can be extremely sensitive to pH fluctuations.
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Covalent bonds
\________ (shared electrons) exist between the oxygen and hydrogen atoms in water.
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Oxygen
\________ has a high electronegativity (ability to attract electrons), whereas hydrogen has a low electronegativity.
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Water molecules
\________ are "sticky, "exhibiting cohesive and adhesive properties.
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Pure water
\________ will dissociate and create equal amounts of H+ and OH- ions, yielding a pH of 7.