Question

when Aluminium oxide is rubbed with Sandpaper the black colour is formed why it is formed give reason​

Answer 1

hi mate here is your answer

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When exposed to air many metals will slowly react with oxygen in the atmosphere to form metal oxides and magnesium is one of those metals. Rubbing with sand paper helps to remove this oxide layer due to which burning speeds up

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hope it is helpful

Answer 2

Answer:

When exposed to air many metals will slowly react with oxygen in the atmosphere to form metal oxides and magnesium is one of those metals. Rubbing with sand paper helps to remove this oxide layer due to which burning speeds up.

hope its help.

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