Water at room temperature is in liquid form. The liquid form of water is a result of small hydrogen atoms and oxygen atoms that strongly pull on these and the hydrogen bonds that are formed between two water molecules.
Water molecules are formed by covalent bonds. However, the bond that ties this molecule to another water molecule is the hydrogen bond. Hydrogen bonds are very weak.
The lifetime of a hydrogen bond is only one in one millionth of a second. However, breaking the bond does not destroy the molecule, because when a bond is broken a new bond is formed immediately. As a result of this constant renewal, it is not possible for water molecules to stick to one another. As a result of this, these molecules become fluid.
Molecules group together as a mobile liquid instead of a gas, which behaves independently. This unique structure of water is one of the essential elements of life. >