Science Buddies: "Ask an Expert"

I need help on my dependent variable before Monday 28th.
My project is, 'Determining Iodide Content of Salt.' Let me give you a background info about my project.
So first we have to make a positive control iodine. Then we test out salts and see if they have a purplish-blue color indicating it had iodine.
So what is my dependent variable? The salt will just change colors.

Hello. We noticed you posted the same question here and are receiving excellent advice from our mentors.
https://www.sciencebuddies.org/science- ... 330#p46330

Please keep post to only one thread for your topic in order for our mentors to best help you based on what has already been discussed.

Good luck with your experiment, and thanks for using Science Buddies!