Combination Reaction - Chemistry Glossary Definition

A combination reaction is a reaction where two reactants are combined into one product. A combination reaction is also known as a synthesis reaction. The reaction has the following general form: X Y → XY Combination Reaction Examples Recognize a combination reaction by examining the number of reactants and products. In this reaction, two reactants become a single product. Combination reaction may occur between two elements, two compounds, or between a compound and an element. The burning of carbon in the presence of oxygen to produce carbon dioxide is a combination reaction: C O2 → CO2 Magnesium oxide combines with carbon dioxide to form magnesium carbonate in a combination reaction: MgO CO2 → MgCO3