Magnesium

If your car has mag wheels, they are made of a magnesium alloy and not only look excellent. Don't worry if you don't have mag wheels; magnesium is abundant in your body. Approximately 300 metabolic processes that constantly take place in our bodies use magnesium. Magnesium is necessary for the healthy functioning of your heart, bones, nerves, blood sugar, heart, and immune system. Even plants require it. Every chlorophyll molecule, which enables photosynthesis in plants, is composed primarily of magnesium. It's cool, then, no?

Magnesium burns in air extraordinarily quickly. The metal will ignite with the addition of a flame. You'll regret trying to put it out with water if it gets out of control. Magnesium will react with the water to produce hydrogen gas, which will only intensify the burning of the magnesium. Magnesium will continue to burn even in the absence of oxygen. Sanding it down is your only chance to put it out.