OX-Y-GEN

Oxygen is a chemical element with symbol (O) and has an atomic number of 8. You're breathing it right now and your body is taking in oxygen. You need oxygen to survive.

It's a good thing that oxygen makes up over twenty percent of the Earth. We are the only planet in the solar system with enough oxygen gas available to let us survive.

Oxygen is colourless and odourless gas and it is highly reactive. If oxygen and hydrogen mix it will explode! Oxygen is the third most important element in the universe, after hydrogen and helium.

Where you can find Iron: