Give examples of combination reactions.


Combination reaction

It is defined as a chemical reaction in which two or more substances combine to form a single substance under suitable conditions. Combination reactions involve the formation of new bonds and this process releases a large amount of energy in the form of heat.

A reaction in which two or more reactants combine to form a single product is known as a combination reaction.
It takes the form of

X + Y → XY
A combination reaction is also known as a synthesis reaction.


  • Formation of calcium oxide by the combination elements calcium and oxygen.
    2Ca + O→ 2CaO
  • Formation of ammonia by the combination of elements nitrogen and hydrogen.
    N2 + 3H2 → 2NH

Check out the video given below to know more about organic reactions and their types

Further Reading

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