The dissolution of common salt in water is a physical change because

Chemistry

JAMB 1993

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 100^oC

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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.

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The dissolution of common salt in water is a physical change because

Correct Answer: Option B

Explanation

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