Question

Do you have a student who wipe the iodine with a tissue paper And the tissue paper turn purple. What does this color change in the tissue paper indicates?

Please help me I don’t get it

Answer 1

You might think that the tissues are changing over time, but actually, the tissues are changing color as you run out. All the tissues are white until you get to the last few in the box. That's when the peachy-yellow color emerges.