Question

why does decomposition reaction call as opposite of combination reaction? explain with examples

Answer 1

In combination reaction, two elements combine with each other to form a compound Whereas in a decomposition reaction, a compound breaks off into two elements.

Answer 2

Answer:

Yeah it is true ,A decomposition reaction is the opposite of a combination reaction when a single reactant decompose into 2 or more products.. this reaction is called as decomposition reaction.

for example-

 CaCO3----------> CaO + CO2