Question

Change of state from ice to water and to steam has been shown below. What type of change is involved in the given picture?

Answer 1

In the given example, ice cubes on heating melt into water and on freezing water changes into ice cubes again. On continuous heating of water, it changes into steam/vapour. When these vapours are cooled they convert into the water again. In these reactions, no new substances are formed and it is reversible. Hence, this reaction is called a physical change.