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Magnesium is quite reactive so it naturally forms a slight coating of its oxide. Aluminium does the same and this acts as a protectant to the metal inside. Normally you would burn Mg to find the mass of the oxide formed. If there is already some oxide present it will cause the result to be inaccurate. Cleaning the ribbon first allows pure Mg to react.

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โˆ™ 2007-12-08 18:07:48
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Q: Why is magnesium cleaned before burning?
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Related questions

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

Magnesium ribbon should be cleaned before burning it in air to remove the oxide layer from it which may prevent or slow down the burning of magnesium ribbon.


Why should magnesium ribbon cleaned before burning in air?

to remove the layer of basic magnesium carbonate to remove the layer of Mg Oxide


Why magnesium ribbon is cleaned before burning?

Magnesium is an extremely reactive metal. When stored, it reacts with oxygen 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. The magnesium ribbon is cleaned by sand paper for removing this layer so that the underlying metal can be exposed to air.


Why is mg ribbon cleaned to use of sand paper before burning?

Magnesium ribbon is cleaned with the sand paper before use because its surface is covered with certain type of grease, in the presence of which the Mg cannot work proper and faster.


Why should a mg ribbon be rubbed with sand paper before burning in air?

magnesium has a layer of magnesium oxide so it is rubbed by sand paper before burning other wise magnesium will not burn


What is the compound for burning magnesium?

what is the compound for burning magnesium


What are the reactants when burning magnesium?

The reactants of hen burning magnesium metal is: Magnesium and oxide  


Name the compound involved in burning magnesium?

After burning of magnesium MgO (magnesium oxide) is obtained.


What are the reactants when burning magnesium metal?

The reactants of hen burning magnesium metal is: Magnesium and oxide  


Is burning magnesium ribbon a physical change?

No. Burning magnesium, or burning anything for that matter, is a chemical change. The magnesium reacts with oxygen to form magnesium oxide, and to some degree reacts with nitrogen to form magnesium nitride.


Is burning of magnesium in the air a chemical or physical change?

Yes. Burning anything is a chemical change as magnesium is converted to magnesium oxide.


Why are there the same number of particles before and after burning magnesium?

Because atom cant just disappear

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