A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour

CBSE Class 7 CBSE Class 7 Science
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1

A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.

  1. What changes do you expect?
  2. Are these changes chemical in nature?
  3. Write a word equation for the chemical change, if any.

Answer:

    • Colour of the solution in the beaker changes from blue to green.
      2 * A brown coloured deposit is found on the surface of the iron nail.
  2. The changes are chemical in nature as new substances, iron sulphate (green) and copper (brown) are formed.
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