This resource is also a part of my Omnivore's Dilemma Research Bundle! Check it out by clicking here!
Although I created this "quiz" as a way of engaging students prior to reading The Omnivore's Dilemma, you could use this prior to any unit on food. Students are exposed to a variety of food additives (and science-y decoys) and must determine whether or not that item is classified as "food" by the FDA. There is quite a bit of "EW!" factor, so be prepared for a loud hour with your students.
After the activity, I have students pull out snacks from their backpacks to search for some of these ingredients and it makes an amazing real-world connection.