Question

Water cycle is a natural change. Classify physical or chemical change . Reversible or irreversible change. And justify your answer

Answer 1

Water cycle is a physical change as it involves the transformation of H2O into its three states.
No chemical reaction takes place during the whole process.
It's reversible as water after evaporating and forming the clouds again precipitate to come down as water again. So water in its liquid form is re obtained.

Answer 2

Water cycle is a physical change. In the water cycle water changes in three states of matter i. e. on evaporation the surface water (liquid state) changes to water vapour ( gaseous state) and form clouds. The clouds condense and the water vapour changes to ice or water ( solid) fall down on the surface of the earth as a rain. The water on the surface again evaporated due to sun's heat and the water cycle continues. Thus, water cycle is a series of reversible change.