Why are decomposition reactions called the opposite of combination reactions?
Write equations for these reactions.
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Decomposition reactions are called the opposite of combination reactions because in a combination reaction, two or more reactants combine to form a single product, while in a decomposition reaction, a single reactant breaks down into two or more products.
An example of a combination reaction is the reaction between hydrogen gas (H2) and oxygen gas (O2) to form water (H2O):
2H2 + O2 -> 2H2O
An example of a decomposition reaction is the breakdown of water into hydrogen gas and oxygen gas through electrolysis:
2H2O -> 2H2 + O2