A dancing egg

Make small holes in shell eggs and put inside a little bit of mercury. You will see that holes will close again. Put eggs in the water and start the boiling process. Once water boils, egss will start to jump up. Or put little bit of mercury in the dish where is prepared peas . Once it starts boilin the peas jumps up from the dish. The same magic you can do with apple. Make a small hole inside the apple and put mercury in. Put the apple in the oven and apple will start jumping up.