Question

3. What is chemical reaction? Give example.
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Answer 1

A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. Log burning in a fire. Burning wood is an example of a chemical reaction in which wood in the presence of heat and oxygen is transformed into carbon dioxide, water vapour, and ash

Answer 2

Answer:

anything which make pollution is called chemical reaction

Explanation:

bursting of crackers

burning wood

burning plastic