In nature,we have different substances.Some are acidic,some are alkaline and others are neutral.In order to tell the nature of a given substance,Chemists use Indicators to determine the pH of the substance in question.The color shown by the indicator can be matched against a pH scale.

Another way in which the pH of a substance can be measured is by using a pH meter whose electrode is placed into the solution whose pH you want to measure and its read. 

Prior Knowledge Requirements

Learners need to have learnt about acids,bases and also knowledge about pH of different solutions.

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