 So let's show this one, sketch the interactive network of water molecules in the liquid state. This is just wanting to show the hydrogen bonding between the water molecules. So you've got to know where the polarity of the water molecules lies. So when we draw a water molecule, just like on the test, it looks like this. So we know that in water, this is delta positive and this is delta negative. So delta negative is there, delta positive is there. And the delta negative goes with the next one, the delta positive. It's going to make a hydrogen bond. So all this is telling us to do is draw another water molecule. This little water looks like this. And the liquid state. We can just keep going if you want to, let's do one more. So hydrogen bonding is the cause of the inter-force line? That's the inter-molecular force and water. Yeah, so a hydrogen bond is the type of inter-