Physics chemistry and Biology demonstrations were taken in class , 3 experiments were selected by me and performed in front of the class .
physics experiment - EGG IN THE BOTTLE
Chemistry experiment - GINNIE IN THE BOTTLE
Biology experiment- flower Aestivation
Egg in the bottle based on the principle of air pressure. The burning paper, however, heats the air inside the bottle. This causes the air inside to expand. When the egg is placed on top of the bottle, it seals the bottle, and the fire eventually goes out. ... As it cools, the air contracts, and the pressure of the air inside the bottle becomes less than the pressure outside.
Ginnie in the bottle was based ont Manganese Dioxide acts as a catalyst to decompose the Hydrogen Peroxide which releases oxygen, water, and heat energy. The amount of energy given off in this very exothermic reaction is sufficient to cause the water to boil. The gas molecules of the water move rapidly producing a white cloud of steam.
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