# How do intermolecular forces differ from intramolecular forces?

Let's say, for example, you have a glass of water or ${H}_{2} O$. To examine the intramolecular forces, you would examine one molecule of water (pictured below). In this molecule, the oxygen atom is covalently bound to two hydrogen atoms. The covalent bond is the intramolecular force that holds together the molecule.