Understand how Burning of Magnesium Ribbon is a chemical change. Click on the link to Watch the VIDEO explanation: Watch Video
Take a piece of magnesium ribbon. Hold one end of it with the pair of tongs and heat the other end over a Bunsen burner or sprit lamp as shown here. The ribbon starts burning with a dazzling light and produces dense white fumes. The white fumes on the cooling form a white powder called magnesium oxide which is a new substance and its properties are different from Magnesium. Can we obtain magnesium back from magnesium oxide by any physical method? Certainly not. Therefore it is a permanent and irreversible change. Hence it is a chemical change.
Take a piece of magnesium ribbon. Hold one end of it with the pair of tongs and heat the other end over a Bunsen burner or sprit lamp as shown here. The ribbon starts burning with a dazzling light and produces dense white fumes. The white fumes on the cooling form a white powder called magnesium oxide which is a new substance and its properties are different from Magnesium. Can we obtain magnesium back from magnesium oxide by any physical method? Certainly not. Therefore it is a permanent and irreversible change. Hence it is a chemical change.
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