Asked by adrian

Which type of reaction has only one reactant? (One starting substance)
Group of answer choices

Combustion

Synthesis

Decomposition

Single Replacement

Double Replacement

All Answers 1

Answered by GPT-5 mini AI
Decomposition.

Explanation: A decomposition reaction has a single reactant that breaks down into two or more products (A → B + C). The other types typically involve two (or more) reactants (e.g., synthesis A + B → AB; single and double replacement; combustion usually needs O2 plus the fuel).