And eventually, every single molecule will evaporate. Now, let's look at the boiling or the Boiling Point. The Boiling Point is the temperature at which the molecules in the liquid gain enough kinetic energy. And now, I'm not only talking about the molecules on the surface of the water. Now I'm talking all the molecules found within the entire system gain enough kinetic energy. So when you boil something, you see bubbles forming from the inside that travel to the up.