The correct statement that compares synthesis and decomposition reactions is:
Synthesis and decomposition reactions are opposites of each other. Synthesis reactions are in the form A + B → AB, while decomposition reactions are in the form AB → A + B.
This is because:
- Synthesis Reaction (Combination Reaction): Two or more reactants combine to form one product, represented as A + B → AB.
- Decomposition Reaction: One compound breaks down into two or more simpler substances, represented as AB → A + B.
Thus, they are indeed opposites.