What you get when you combine two Hydrogenatoms and a single Oxygen atom. Try it, it's fun to make on those rainy days. Or if it is raining you could go outside and just hold a cup out and catch some of this mystical substance known as water.
Water is a element of earth and it is also something you can drink it is a transparent liquid and about 90% of the human body is made up of it and even most of the earth is water.