13.3 Consider the following actions: (a) 1 g of dry blue Cuso, powder is dissolved in a beaker containing water. (b) An iron blade is dropped in this solution, which results in the formation of a green-coloured solution. These two steps are a chemical and a physical change, respectively. (ii) a physical and a chemical change, respectively.
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(ii) a physical and a chemical change, respectively.
Explanation:
- When CuSO₄ dissolved in water, there is no change in the composition hence it is a physical change.
- While Fe is added into the solution of CuSO₄, FeSO₄ is formed and the solution turned green. It is an example of chemical change.
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