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
The correct answer is: B
Explanation
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.