What is usually needed to a decomposition reaction to occur? a more active second reactant the addition of energy the addition of an enzyme a lower temperature

the addition of energy

Explanation: A decomposition reaction is one in which one reactant decomposes to produce two or more than two products.

Thus to break the bonds between the reactant molecules, energy has to be supplied. All decomposition reactions are called as endothermic reactions as all of them require energy.

For example:

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