So because these h atoms have a partially positive charge, they will be attracted to the partially negative oxygen atoms. And so if we look at these two water molecules, for example, this H atom of this water molecule will try to get as close as possible to this partially negative oxygen atom. And this bond is known as an intermolecular bond. Now, the specific type of intermolecular bond in this case is a hydrogen bond. So anytime we have the H atom bonding with some type of negative charge that is a hydrogen bond. Now, what's so special about a hydrogen bond?