Combination Reaction Definition

Some combustion reactions are combination reactions.
Some combustion reactions are combination reactions. PM Images, Getty Images
by Anne Marie Helmenstine, Ph.D.
Updated March 06, 2017

Combination Reaction Definition: A combination reaction is a reaction where two reactants are combined into one product.

Examples: C + O2 → CO2, or the burning of carbon in the presence of oxygen to produce carbon dioxide is a combination reaction.