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A PH scale measures the acidic(H+) or basic(OH-) nature of a substance. This scale ranges from 0 to 14.
Pure water has a neutral nature and therefore has a PH of 7.
Any substance with a PH less than 7 is considered acidic (contains H+ ions). This can also be used to determine how acidic the substance is. For instance, a substance with a PH of 1 is considered more acidic than that with a PH of 6 (that is, it has more H+ ions)
Any substance with a PH greater than 7 is considered basic (contains OH- ions). This can also be used to determine how acidic the substance is. For instance, a substance with a PH of 14 is considered more basic than that with a PH of 8 (that is, it has more OH- ions)
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Jan 18th, 2016
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