What is a pH?

pH shows you how acidic a substance is. The ph scale is from 1-14. If the solution is above 7, it is a base. Id it is lower than 7 the substance is acidic and if it is 7 it is neutral.
The difference between an acid and a base is that a base accepts a proton that is being given from an acid.
To tell if a substance is acid using pH paper, the paper will changen color to a more yellowish color. But if you want to know using red cabagge the color will change red.
If you use pH paper to tell if it is a base, the paper will change to a purpley color and if you use red cabbage the color will change into a pale blue or green.

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