Question

Why should a magnesium ribbon be cleaned before burning in air?

Answer 1

Answer :

A magnesium ribbon should be cleaned before burning in air because magnesium when exposed to air reacts with oxygen which leads to the formation of magnesium oxide on the surface of magnesium ribbon.

Answer 2

Answer:

Magnesium very reactive element which rapidly reacts with oxygen in the air to form a white layer of magnesium oxide and this layer will not burn.