Question

Why is decomposition reaction called opposite of combination combination reaction and equation for this reaction?

Answer 1

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In a combination reaction two or more substances are combined to form new substance while in the decomposition reaction one substance decomposes into two or more substances. Hence, the decomposition reactions are called opposite of combination reactions.

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Answer 2

Answer:

So in a combination reaction two or more substances or elements react with eaach other to form a single compound. But in decomposition reaction one compound splits to different elements or substances. therefore decomposition reaction is called opposite of combination reaction.