Question

What is the use cleaning magnesium ribbon?

Answer 1

before burning in air the magnesium ribbon is cleaned by rubbing with Sandpaper this is done to remove the protective layer of magnesium oxide from the surface of magnesium ribbon this protective layer is known as magnesium oxide as it is formed by the slow action of oxygen of Air on it .

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Answer 2

• Magnesium is a very reactive metal. So, when it is stored, it reacts with oxygen in the presence of air to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. Therefor, magnesium ribbon is cleaned in order to remove the layer of magnesium oxide so that it can burn in air.