The PH Scale

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Acidic and basic (basic is another way to say alkaline) are two extremes that describe a substance. Mixing acids and basics can cancel out or neutralize their extreme effects.
A substance that is neither acidic nor alkaline is neutral. Pure water is neutral.

The pH scale measures how acidic a substance is.


The pH scale ranges from 0-14

A pH of 7 is neutral.

A pH of less than 7 is acidic.

A pH greater than 7 is basic.


The pH scale is logarithmic. Each increment on the pH scale is 10 times as acidic or basic as the next. For example, pH 4 is ten times more acidic than pH 5 and 100 (10 times 10) more acidic than pH 6. The same holds true for pH values above 7, each of which is ten times more alkaline than the next lower whole value. For example, pH 10 is ten times more alkaline than pH 9 and 100 times (10 x 10 more alkaline than pH 8).


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