Why magnesium ribbon is rubbed with sandpaper before combustion
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Magnesium ribbon is very reactive metal. When stored it react with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxide. Magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly
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HEY!!
Magnesium is a reactive metal and amongst the most common elements found on the earth, so it reacts with atmospheric oxygen gas and makes the magnesium oxide which covers the surface of Mg-metal.
So, when we perform the oxidation of magnesium we clean the Mg-ribbon by a sand paper so that the magnesium oxide is removed and only the metal could be burnt.
Magnesium is a reactive metal and amongst the most common elements found on the earth, so it reacts with atmospheric oxygen gas and makes the magnesium oxide which covers the surface of Mg-metal.
So, when we perform the oxidation of magnesium we clean the Mg-ribbon by a sand paper so that the magnesium oxide is removed and only the metal could be burnt.
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