Tuesday, June 5, 2012

Effect of acid rain on rocks :

Things required :
  •   Plastic cup
  •  Vinegar
  •   Water
  •  Small piece of lime stone

How it’s react ?
 o   Take a plastic cup. Take half cup of vinegar. ( vinegar is an acid )
 o   Place a small piece of lime stone in the cup of vinegar.
 o   Allow it to soak for several days.
 o   Remove the lime stone and observe carefully.

Why ?
                 In nature when rain water combines with carbon dioxide in air or with carbon dioxide from decaying organic matter , carbonic acid is produced. When the acid flows through cracks in limestone, it chemically reacts with the rock forming dissolved calcium, which is carried away in water.



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