following chemical reactions and classify them
as physical or chemical change: (a)iron nail and copper sulphate solution in water
(6) Burning of magnesium ribbon in air
(c) zine with dilute sulphuric acid
(d) Heating of copper sulphate
(e) Sodium sulphate with barium chloride in the form of their solutions in water
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Burning of magnesium ribbon in air
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