True: Substances with pH 3 are acidic, Acids have pH less than 7, Vinegar is an acid, Alkalis turn pH paper purple, Universal indicator can test pH, Citrus fruits are acidic, Kitchen cleaners are alkali, Alkalis have a pH greater than 7, pH 11 is alkali, pH 7 is neutral, Acids turn pH paper red, False: Alkalis have pH less than 7, Baking soda is acidic, Acids have pH 1-6, Fizzy drinks are neutral, Neutral substances turn pH paper yellow , Acids turn pH paper dark blue, Substances with pH 6 are neutral, pH 3 is alkali, pH 7.5 is neutral,

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