The dissolution of common salt in water is a physical change because
-
A.
the salt can be obtained by crystallization -
B.
the salt can be recovered by the evaporation of water -
C.
heat is not generated during mixing -
D.
the solution will not boil at 100oC
Correct Answer: Option 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.