Question

What will happen when a small amount of quicklime is added to water?

Answer 1

Quick lime is Calcium oxide

Its chemical formula is CaO

When water is added to quick lime ie Calcium Oxide immediate reaction takes place between them forming Calcium Hydroxide

CaO + H2O =Ca(OH) 2

This is an exothermic reaction

Answer 2

When Calcium oxide i.e. quick lime is added to water filled in a bucket, it reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.