Water is the most common molecule in the human body (~98-99%). Both hydrogen atoms are attached to a single oxygen atom through polar bonds. The oxygen has a slight negative charge and each of the hydrogen atoms has a slight positive charge. This allows hydrogen bonds to form between the positive hydrogen atoms and the negative oxygen atoms of neighboring water molecules. The state of water is determined by weak hydrogen bonds. At low temperatures the bonds remain intact and water freezes. As the temperature rises, the bonds weaken and water becomes a liquid. If the temperature is high enough, the bonds will break completely and water will become a gas.
Leave a Reply