Experimenter Dave Hax (previously) demonstrates the science of liquids with a clever demonstration during which he turns water into wine and wine into water with the help of a small plastic square.
Turn water into wine! This simple science experiment demonstrates how fluids with different density can switch places. Fun to use as a magic party trick or as a demonstration for a physics experiment. Watch as the water switches place with the wine, because water has a higher density then wine. You could try using a playing card instead of the thin plastic spacer.