definition of reaction
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Explanation:
something done, felt, or thought in response to a situation or event.
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banasreehalder:
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Explanation:
A reaction in which a substance undergoes a change and loses its identities to form a new product(s) with completely different properties is known as chemical reaction. We can identify a chemical reaction if there is a colour change, a change in state, change in temperature, evolution of gas or formatin of precipitate.
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