The property of water that allows it to stick to glass is called adhesion. This property is related to cohesion, which is the tendency of water molecules to be attracted to one another. Adhesion is due to the molecular structure of a water molecule and the type of bonding that occurs. Each water molecule is made from one oxygen atom bonded to two hydrogen atoms, H2 O. They are bonded together through covalent bonds, which means they share their electrons. Oxygen is more electronegative than hydr