Differentiate between combination and decomposition

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Differentiate between combination and decomposition

Posted by Legend Boy Abhinav 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 11 months ago

Combination reaction:-
It is a chemical reaction in which two or more reactants combine with each other to form a new single product.
It releases heat during the chemical reaction.
This means that it is exothermic .
Examples :-
1) 2H₂ + O₂ ---->2H₂O

2) 2Mg + O₂ --->2MgO

Decomposition reaction:-
It is a chemical reaction in which one reactant breaks down into simpler compounds.
It absorbs heat from the surroundings during the chemical reaction.
IN other words , it is endothermic .
Examples :-
CaCO₃ ===> CaO + CO₂

2H₂O ===> 2H₂ + O₂

0Thank You

Aadya Singh ? 5 years, 11 months ago

In combination reaction, 2 or more compounds combine together to form a new substance whereas in decomposition reaction, single compound splits up into 2 or more substance...

2Thank You

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CBSE > Class 10 > Science