Question

5. With the help of an activity explain how do we know that a chemical reaction has taken
place
6. What are indicators? Give examples of natural and synthetic indicators​

Answer 1

Acid-base indicators are chemicals used to determine whether an aqueous solution is acidic, neutral, or alkaline. Because acidity and alkalinity relate to pH, they may also be known as pH indicators. Examples of acid-base indicators include litmus paper, phenolphthalein, and red cabbage juice.

Answer 2

indicators are the chemicals which can indicate the acidic and basic values of a chemical reaction .examples are:natural indicators-turmeric and purple cabbage ,synthetic indicators-litmus paper

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