Question

Why magnesium ribbon is cleand before burning in air?

Answer 1

Answer: Magnesium ribbon is cleaned to get rid of magnesium oxide formed on the ribbon .

Explanation:Magnesium reacts with oxygen in the atmosphere to make magnesium oxide therefore first it is cleaned before burning .

Answer 2

Answer:

It is so because magnesium is a very reactive metal it reacts with oxygen present in the air and forms area of magnesium oxide on it and the layer of magnesium oxide is highly stable and does it prevents the for the reaction of magnesium with oxygen so that is why that the magnesium ribbon should be cleaned before burning it in the air aur in the presence of the oxygen so that the underlying metals can also be exposed to the air....