I am sure that you have seen breakfast cereals that claimed to be enriched with iron. You may have thought that the manufacturer added some extract from spinach or liver, but the actual ingredient may surprise you.
Fireworks play a role in many holidays and celebrations. Have you ever wondered how they get the different colors into the fireworks? If you want yellow fire, do you add yellow paint to the mixture? No, that would not work. Instead, you need something that will burn with a yellow flame. Yellow flames are fairly common, but what about green flames or purple flames?