A solution of salt water is boiled. The water evaporates and solid salt remains. Which statement is true?

Question

A.
The salt has undergone a physical change, and the water has undergone a chemical change.

B.
The salt and the water have both undergone chemical changes.

C.
The salt has undergone a chemical change, and the water has undergone a physical change.

D.
The salt and the water have both undergone physical changes.

Answer 1

The correct statement is:

A. The salt has undergone a physical change, and the water has undergone a chemical change.

However, this statement is misleading based on the actual processes that occur during boiling salt water.

In reality, when salt water is boiled, the water undergoes a physical change (evaporation) while the salt remains unchanged and also undergoes no chemical change. Therefore, the best choice based on accuracy would be:

None of the provided options accurately describe the process.

A more accurate statement would be: "The water has undergone a physical change (evaporation), and the salt has remained unchanged."