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.
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.
to remove the layer of basic magnesium carbonate to remove the layer of Mg Oxide
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.
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.
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
The reactants of hen burning magnesium metal is: Magnesium and oxide
After burning of magnesium MgO (magnesium oxide) is obtained.
The reactants of hen burning magnesium metal is: Magnesium and oxide
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.
Yes. Burning anything is a chemical change as magnesium is converted to magnesium oxide.
Because atom cant just disappear