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16 terms

pH quiz

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Many Substances...
come apart into ions when they dissolve into water.
Water dissociates partly into...
hydrogen ions (H+) and hydowyl ions (OH-).
Acid
substance that releases H+ ions in water or accepts OH-
Base
releases OH- in water (alkali) or accepts H+
Water is..
A polarmolocule
Hydrogen is an
acid
Hydroxyl is a
base
Water splits other substances because
it is a natural salt
pH
Power if Hydrogen
pH
it is the negative logarithm of the concentration of H+ ions in the solution
When do most chemical reactions occur?
rapidly at a pH near the neutral point
The acidity of alkalinity of a solution is
indicated by a figure known as pH
0-6 pH
acid
8-14 pH
base
Buffers are
chemicals in the fluids of living oranisms, keeping the pH constant by releasing or adding (H+) or (OH-) as they are added or removed from the body.
Buffers
maintain a stable environment.