7
practice testMultiple Choice

Practice Test

Question 7 • Physical Science

Helen needs to make a supersaturated solution of saltwater. Which describes the best way to make the solution?

Answer
A
decrease the temperature of the solution and add less salt
B
decrease the pressure and add more salt
C
increase the pressure and add less salt
D
increase the temperature of the solution and add more salt

Explanation

A supersaturated solution contains more dissolved solute than the solvent can normally hold at that temperature. Heating the water increases how much salt can dissolve, so Helen should increase the temperature and add more salt. Cooling it afterward can leave the extra salt temporarily dissolved, creating a supersaturated solution.

AI-written and checked against the verified answer.

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