Here are some examples of pH:
The pH of pure water is 7, which is the midpoint of the pH scale.
The pH of our stomach varies from 1.5 to 3.5: our stomach is quite acidic!
The acid in your car's battery has a pH of about 0.5: don't put your hands in there!
House products like drain cleaners are strong bases: some can reach a pH of 14!
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