So once again, we see that we can use the kinetic theory to explain nanoscopic or nanoscale behavior of these molecules. And once again, the kinetic theory explains boiler's law. A smaller volume means less room to navigate and increase in number of collisions. This increase in collisions will increase our pressure because by definition, pressure is forced per unit area. And if we have more molecules hitting the walls, we have more force and so a higher pressure. So this is Boyle's Law and Boyle's Law is used to explain macroscopic behavior.