Question

Why should a magnesium ribbon be cleaned before burning in air? 1?

Answer 1

Explanation:

magnesium is highly reactive.so it normally reacts with oxygen in the atmosphere and forms an oxide layer around it as a protective layer.so before burning,magnesium must be cleaned to get rid of that oxide layer

Answer 2

Answer:

It is so because magnesium is a very reactive metal and it reacts with the oxygen present in the air and it forms the layer of magnesium oxide and the layer of magnesium oxide is so stable that it prevents the for the reaction of magnesium with oxygen so that is why magnesium ribbon should be cleaned with sandpaper before burning it in the air