Classic high school experiment: running water is deflected by a static electric field. Reason: water is a polar molecule. Fact: Ethyl alcohol is less polar than water. Theory: Depending on the strength of the forces between water/alcohol molecules, an electric field could be used to distill low-proof spirits without heat.

(Picture a shielded ball with electric charge, mixture is poured onto the ball, somewhat off center. Water is deflected away, alcohol hits the shield and is collected in a reservoir.)