This lab required; baking soda, baking powder, and cornstarch, and how they would react against Iodine, water, and vinegar to differentiate them. The baking soda and water produced no reaction; with vinegar,it fizzled and produced gas; with iodine, no reaction. Then the baking powder and water fizzled; with vinegar also fizzled, and iodine, created a black liquid and gas. Lastly the corn starch and water had no reaction; then the vinegar, had no reaction; then the corn starch and iodine produced a thick black liquid. I could find out which powders were which, simply using the Iodine, because each powder had a specific identity.