Question

When an iron nail is put into a beaker containing copper sulphate solution, the

blue colour of the solution slowly changes to green.

a) Why does the colour of the solution change?

b) Is it a physical or a chemical change?

c) Which type of reaction is this?

Answer 1

a) the colour of the solution changes due to chemical reactions. the solution becomes iron sulphate solution.
b)it is a chemical change as we can not change it back to iron nail and copper sulphate solution.
c)this is a chemical reaction.