How to identify which is "acid"and which is "base"

1.	How to identify which is "acid"and which is "base"
Answer» tify whether the substance is acid or base it can be DONE by following :- USING LITMUS paper or natural indicator. By their TASTE if the substance is sour in taste than it is acid and if it is bitter than it is base.Checking pH value if the pH value is more than 7 than it is basic in nature if the pH value if less than 7 than it is acidic.Acid donate Hydrogen ion WHEREAS Bases donate Hydroxide ion.

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