What causes H20 molecules to rise through evaporation or boiling? My theory is the H20 molecule is separated from other H20 molecules through the introduction of heat or perhaps air flow. Then the electrical charge of the H20 molecule is attracted to the electrical charge of another atom or molecule in the air. That creates a balloon effect that causes it to rise. Can someone help me understand what is happening at that stage of a water molecule rising from the water's surface into the air? I'd like to identify the specific charges on each atom/molecule that is creating that temporary cohesion. Once those charges are identified, a chemical engineer could make the process very efficient. See the attached.