The dissolution of common salt in water is a physical change because
the salt can be obtained by crystallization
the salt can be recovered by the evaporation of water
heat is not generated during mixing
the solution will not boil at 100oC
Correct answer is B
The evaporation of water is a physical change. When water evaporates, it changes from the liquid state to the gas state, but it is still water; it has not changed into any other substance.