Question

Ms. Shobhna conducted a science activity in following steps:
I : She made crystals of pure copper sulphate from an impure sample
II : She dissolved the crystals in pure water to make a blue solution.
III : She added a metallic piece into the copper sulphate solution and after some time colour of the solution changed to green.

Which of the following statements is correct regarding
this activity?

Options....

A. Step I involves a physical change while steps II and III involve chemical changes.
B. Steps I and II involve physical changes while step III involves chemical change.
C. All the steps involve physical changes.
D. All the steps involve chemical changes.

i want a proper explanation for the answer​

Answer 1

Answer:

C. All steps involve physical changes.

Explanation:

I hope this will help you