A large glass column is prepared with layers of mercury, carbon tetrachloride, water, and oil. There are various objects in the column that float on a given layer depending upon its density.
- Large glass column
- Various items to float in the column
- carbon tetrachloride (CCl4)
- The column is presented already layered in the glass tube.
There are various objects already in the column that float on a given layer depending upon its density -- piece of brass, masonite, nylon, cork. The presenter can point to these and discuss why something floats at a particular level, etc.
Special Safety Notes
- The glass column contains toxic chemicals that should not be exposed to the audience; it is capped the whole time.