Thursday, September 13, 2012

Blue Bottle Magic Tricks


  • Tap water
  • 2 one litter conical flask with stopper.
  • 7.5 g glucose         ( 2.5 g for one flask : 5 g for other flask )
  • 7.5 g NaOH          
  • 0.1 % solution of methylene blue  ( 1 ml for each flask )
  • Half fill two one liter conical flasks with tap water.
  • Dissolve 2.5 g of glucose in one of the flask ( A ) and 5 g of glucose in the other flask ( B )
  • Dissolve 2.5 g of NaOH in flask A and 5 g of NaOH in flask B.
  • Add 1 ml of 0.1 % of methylene blue to each flask.
  • Set a flask a side. The liquid will gradually becomes colorless.
  • The blue color of the solution can be restored by shaking the contents of the flask.
         Gluconic acid is converted to sodium gluconate in the presence of NaOH. Methylene blue speeds up this reaction by acting as an oxygen transfer agent. By oxidizing glucose, methylene blue is itself reduced ( leucomethylene blue ) and becomes colorless. Leucomethylene blue is re-oxidized and the blue color of solution can be restored.

Super Cooling Water


  • 20 ml of distilled water
  • Bowl
  • Glass 
  • Ice cubes
  • Salt
  • Pour 20 ml of distilled water into a very clean glass.
  • place the glass in a bowl of ice cubes such that the level of ice is higher than the level of water in the glass.
  • Sprinkle 2 tsp of salt on the ice.
  • Allow about 15 minutes for the water to cool below freezing.
  • Insert the thermometer into the glass of water. When the temperature of the water below freezing, the water has been super cooled.
  • Make the water freeze by pouring it over a piece of ice.
          Chill water below its freezing point without having it turn into ice. Then pour the water or shake and watch it crystallize before your eyes.

Pepper And Water Tricks


  • Pepper 
  • Water
  • Dish washing liquid
  • Plate Or Bowl
  • Pour water into a plate.
  • shake some pepper into the water.
  • Dip the finger into the plate. Nothing much happens.
  • Put a drop of dish washing liquid on finger and dip it into the plate the pepper will rush to the outer edges of the plate.
           Add detergent to water the surface tension of water is lowered. So the water wants to spread out. So the water is carried the pepper to the outer edge of the plate.

Wednesday, September 12, 2012

Change Water Into Blood


  • Sodium carbonate
  • 2 glass
  • Phenolphthalein indicator
  • Rod 

  • Ferric salt
  • Ammonium thio cynate OR Pottasium thio cynate .
  • Coat sodium carbonate to the bottom of a glass.
  • Fill the second glass half full of water. Add 10 drops of phenolphthalein indicator solution to the glass.
  • To change water into blood , pour the water into the glass containing the sodium carbonate.
  • Stir well the water will change from clear to red.

Burning Money

               A combustion reaction occurs between alcohol and oxygen producing heat, light, carbon dioxide and water. Rupee not is soaked an alcohol water solution, the alcohol has a high vapour pressure and is mainly on the out side of the material. when the rupee is lit the alcohol is what actually burn ? The temperature at which the alcohol burns is not high enough to evaporate the water which has a high specific heat so the rupee remains wet and isn't able to catch fire on its won.

                   After alcohol burned, the flame goes out.


  • Mix 50 ml of water with 50 ml 100% pure alcohol.
  • Add a pinch of salt to the solution
  • Soak a rupee into the solution, that it is thoroughly wet.
  • Use tongs to pick up the rupee.
  • Allow any excess liquid to drain it.
  • Move the rupee away from the solution.
  • Light the rupee on fire and allow it to burn until the flame goes out.
  • Alcohol has high vapour pressure. So alcohol easily catch fire and burns quickly.
  • But the temperature not enough to the water. so the rupee remains wet. Isn't able to catch the fire.

Egg in a Bottle


  • Egg ( boiled one )
  • Conical flask
  • Paper
  • Match box
  • Take a piece of paper, fire it and drop it into the bottle.
  • Set the egg on the top of the bottle.
  • When the flame go out , the egg will get pushed into the bottle.

  • Pressure of the air present in inside and out side of the bottle same.
  • Change the temperature of the air inside the bottle that time the pressure also change inside the bottle.
  • So that inside the pressure decrease and the out side pressure increase .
  • So high pressure will push the egg into the flak.

Baking soda volcano


  • 4 cups flour
  • 2 tsp salt
  • 3 tsp cooking oil
  • Warm water
  • Plastic soda bottle
  • washing detergent 
  • Food coloring
  • Vinegar
  • Baking dish
  • baking soda
  • Mix 4 cup of flour, 2 tsp of salt, 3 tsp of cooking oil and warm water.  Make them dough.
  • stand the soda bottle in the baking pan and mold the dough around into a cone shape. Don't cover the hole.
  • Fill the bottle with warm water and a pinch of orange food color.
  • Add detergent to the bottle.
  • Add 2 tsp of baking soda to the liquid.
  • Slowly pour vinegar into the bottle.
  • Watch out- eruption time.

       The chemical reaction between the baking soda and vinegar. in this reaction carbon dioxide gas is evolved. The same reaction present in real volcanoes also. 

Bend water


  •  Nylon comb or Latec balloon .
  • Water faucet.
  • Dry the hair with nylon comb.
  • Turn the tap water a narrow stream of water is flowing.
  • Move the comb close to the water. Now the narrow stream of water bend towards the comb.
  • The amount of bend depends on how close the comb is to the water