Magnesium ribbon is rubbed before burning because it has a coating of ?

Question

Answer

The answer is coating of magnesium oxide...as
magnesium is a very reactive metal which when come in contact with oxygen forms a layer of magnesium oxide which prevent further reaction of magnesium ribbon with heat that's why a magnesium ribbon must be rubbed with Sandpaper before burning in air.

Answer

Magnesium forms a layer of oxide when exposed in air. In order to remove the layer it is rubbed with sand paper

Answer

Answer

Magnesium ribbon is rubbed with sand paper before burning it in the air because the magnesium ribbon which we use usually has a coating of a white layer of magnesium oxides on its surface. It is formed by the slow reaction of moist air on it. This hinders the burning of magnesium. So,This layer is removed by rubbing with sand paper before burning

Answer

Magnesium oxide due to reaction with oxygen..

Answer

Coating on Magnesium Ribbon
Magnesium ribbon is a highly reactive metal that is often used in experiments to demonstrate combustion. However, before it can be burned, the ribbon must be prepared by rubbing it with a rough surface. This is because magnesium ribbon has a coating of magnesium oxide on its surface, which prevents it from reacting easily.

What is Magnesium Oxide?
Magnesium oxide is a compound that forms when magnesium metal reacts with oxygen in the air. It is a white, powdery substance that can form a thin layer on the surface of magnesium ribbon over time. This layer of magnesium oxide acts as a barrier, preventing the magnesium metal from coming into contact with oxygen and other substances in the air.

Why is Magnesium Ribbon Rubbed Before Burning?
The purpose of rubbing magnesium ribbon before burning it is to remove the layer of magnesium oxide that has formed on its surface. Rubbing the ribbon with a rough surface, such as sandpaper or a file, removes the oxide layer and exposes the clean magnesium metal underneath. This makes the ribbon more reactive and allows it to burn more easily.

Precautions While Handling Magnesium Ribbon
It is important to handle magnesium ribbon with care, as it is a highly reactive metal that can ignite easily. When handling magnesium ribbon, it is important to wear gloves and safety goggles to protect your skin and eyes. Always use a fireproof surface when burning magnesium ribbon, and keep a fire extinguisher nearby in case of an emergency.

Conclusion
In conclusion, magnesium ribbon is rubbed before burning because it has a coating of magnesium oxide on its surface. This layer prevents the magnesium metal from reacting easily, so it must be removed before the ribbon can be burned. By rubbing the ribbon with a rough surface, the oxide layer is removed and the clean magnesium metal is exposed, making the ribbon more reactive and easier to ignite.

Answer

Magnesium reacts with oxygen suddenly to form Magnesium oxide when kept outside so to remove that Magnesium oxide we rub it with a sand paper.

Answer

Oxides!

Answer

Magnesium oxide.....

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