Question

write an example of endothermic reaction

Answer 1

i)Melting ice cubes.
ii)Melting solid salts.
iii)Evaporating liquid water.
iv)Converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes)

Answer 2

Dear,
All the decomposition reaction are endothermic reaction....
For example :- when calcium carbonate is heated it decomposes to form calcium oxide and carbon dioxide :-
CaCo3 + heat -------- CaO + CO2
calcium carbonate + heat ------- calcium oxide + carbon dioxide