Question

what is composition and decomposition reaction and give example each

Answer 1

● Combination reaction :- A reaction in which two or more substances react with each other to form a simple substance generally known as compounds.
EXAMPLE : C + O2 --------> CO2
● Decomposition reaction :- A reaction in which a single substance (generally called compound) breaks down into two or more simpler substance (elements) is called decomposition reaction.
EXAMPLE : CaCO3 --------> CaO + CO2

Answer 2

Hey user !

So here is your answer !

Combination reaction -> This is the type of reaction in which two elements are combined to make one simpler substance.

For example -> C+ O2->CO2

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Decomposition reaction -> It is opposite to the combination reaction. Reaction in which a simpler substance is broken into two elements.
For example -> CaCO3-> CaO+ CO2

Hope it is satisfactory :-)

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