Question

what happens when quicklime is added to water

Answer 1

Formula of quick lime is CaO.
 when we add quick llime to water then ,
                    CaO + H2O ------->  Ca(OH)2
                i hope this answer may help you

Answer 2

hey friend,
__________________________

When lime water is added to water, it forms a new substance Calcium Hydroxide[Ca(OH)2] and heat is evolved.

CaO+H2O=>Ca(OH)2+Heat

hence, it is a chemical change.
___________________________

I hope this answer helps you...