In this activity on page 7 of the PDF (Chemistry—It’s Elemental), learners use iodine to identify foods that contain starch. Compare the starch content of a ripe banana, an overripe banana, milk, and flour mixed with water. Use this experiment to introduce learners to starch and how our bodies use starch to break down nutrients during digestion.
Safety notes: DO NOT eat any tested foods or the iodine. Wear goggles. Follow the safety tips on the bottom of page 7 as well as Milli's safety tips on page 5.