Decomposition reaction requires energy in the form of heat or light or electricity for breaking the reactants. Write one example for each with equation.

Explanation

Decomposition of calcium carbonate by heating :
`CaCO_(3)(g)overset("heat")(to)CaO(s)+CO_(2)(g)`
Decomposition of silver bromide by the use of sunlight :
`2AgBr(s)overset("sunlight")(to)2Ag(s)+Br_(2)(g)`
Decomposition of water by electricity :
`2H_(2)O(l)overset("electrolysis")(to)2H_(2)(s)+O_(2)(g)`