13. The diagram shows a test tube of pure copper (II) sulfate, CuSO4, solution before, during, and after the addition of iron, Fe, shavings.
Which of the following correctly makes and supports a claim about the change that occurred?
Type Answer HERE:
a. A physical change occurred which is evidenced by the change in color of the solution.
b. A chemical change occurred which is evidenced by the change in color of the solution.
c. A physical change occurred which is evidenced by the dissolved iron in the solution.
d. A chemical change occurred which is evidenced by the dissolved iron in the solution.
b. A chemical change occurred which is evidenced by the change in color of the solution.
The correct claim is that a chemical change occurred, as evidenced by the change in color of the solution after the addition of iron shavings. This is because a chemical reaction took place between the iron and copper (II) sulfate, resulting in a new substance with a different color.