It's around time for a science experiment video, and for today's, I'll again resort to plastering Steve Spangler all over your screen. Today, the object is to expand a bit on the old can't-mix-oil-and-water chestnut.
By not mixing seven layers worth of stuff, with water in the middle, lamp oil on the top and honey on the bottom. You'll note numbers on the labels; that's the specific gravity level. Water is the baseline at 1.00; everything else is relative to that. For a more complete list (not complete, but more complete) of liquids, go here.