Question

why is it suggested to rub the magnesium ribbon with sand paper before burning

Answer 1

Answer:

here is your answer

Explanation:

Magnesium ribbon is rubbed with sand paper before burning it in the air because the magnesium ribbon which we use usually has a coating of a white layer of magnesium oxides on its surface. It is formed by the slow reaction of moist air on it. This hinders the burning of magnesium. So,This layer is removed by rubbing with sand paper before burning

Answer 2

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