Water is composed of two elements, hydrogen and oxygen. H2O is the chemical formula for water. This means that every water molecule has two hydrogen atoms that are bonded to one oxygen atom. More »

Water is formed when oxygen and hydrogen atoms combine, and it takes a total of three atoms to make a water molecule. Two of the atoms are hydrogen and the last atom is oxygen, hence the chemical formula H2O. More »

Fluoride can be removed from water through reverse osmosis filtration, distillation filtration and the use of an activated alumina defluoridation filter, according to Anne Marie Helmenstine at About.com. Boiling water, f... More »

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Water freezing into ice is a physical change because the hydrogen and oxygen molecules that make up the water stay the same, despite the change in state from liquid to solid. A physical change is simply a change in the m... More »

The most abundant elements in ocean water are hydrogen and oxygen, the two elements that constitute the water molecule. Excluding the water molecule, the most abundant elements in ocean water are sodium and chlorine. More »

The two elements that make up a molecule of water are hydrogen and oxygen; there are two hydrogen atoms and one oxygen atom, resulting in the chemical formula H2O. Hydrogen and oxygen bond together due to the number of e... More »

Some names of gases include hydrogen, helium, oxygen, argon, krypton, neon, nitrogen, fluorine, chlorine, xenon and radon. Gases that are compounds include carbon dioxide, carbon monoxide, methane, nitrous oxide, ozone a... More »