Water, Water Everywhere!

What does "H2O" represent in chemistry?

a) Two atoms of hydrogen and one atom of oxygen

In chemistry, H2O represents two atoms of hydrogen and one atom of oxygen, the chemical formula for water.

Explanation: In chemistry, the representation H2O stands for two atoms of hydrogen and one atom of oxygen. It is the chemical formula for water. Water is a binary compound composed of hydrogen and oxygen. When two hydrogen atoms and an oxygen atom share electrons via covalent bonds, they form a water molecule. In a balanced chemical equation, 2H₂O represents two molecules of water.