- Iron fortified cereal (those with labels "reduced iron" or "100% iron")
- 3L beaker
- Large white stirring bar and retriever
- Stir plate
Put about 3 cups of cereal into beaker. Add water until cereal becomes soggy. Put in clean white stir bar and stir with magnetic stirrer for about 10-15 min. Remove stirring bar from beaker and note the slivers of iron covering magnet.
Note: Humans cannot absorb metallic iron. However, metallic iron reacts with HCl in stomach to produce Fe(II)