A Party Trick for the Watery Dense: How to Switch Alcohol and Water Between Two Cups Written by Moriel Schottlender on 30 March 2008. Posted in Experiments, Party Trick, Physics. Water is dense. Alcohol is Dense. But they’re not the same density, no siree. They’re differently densed. Which means we can use that to our advantage. And we do, in this experiment. Read More