A chemical change occurred which is evidenced by the change in color of the solution.
Support: The color change from blue to green in the solution indicates a chemical reaction took place between the copper (II) sulfate and the iron shavings. This change in color is evidence of a chemical change occurring.
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 physical change occurred which is evidenced by the change in color of the solution.
A chemical change occurred which is evidenced by the change in color of the solution.
A physical change occurred which is evidenced by the dissolved iron in the solution.
A chemical change occurred which is evidenced by the dissolved iron in the solution.
3 answers
a b c or d
B
4 answers