No, iodide won’t work. You’ll find out why when you hit chemistry–different molecule. You need IODINE and Walmart does sell it–I have a bottle of theirs, actually, on my shelf. What you want will be in the health-care section, probably near the bandaids and disinfectants. You want povidone-iodine solution, 10%. This will give you a nice reaction. It is inexpensive. It is nasty and dark and smelly (my mom used to doctor all our owies with it) You’ll use it again later if you continue into chemistry. Hope this helps!
