Baking soda volcano

MATERIALS :

• 4 cups flour
• 2 tsp salt
• 3 tsp cooking oil
• Warm water
• Plastic soda bottle
• washing detergent 
• Food coloring
• Vinegar
• Baking dish
• baking soda

PROCEDURE :

• 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.

WHY ?

       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.