why a magnesium ribbon should be clear before experimenting in change of a state after performing the experiment
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Magnesium does tend to react with the oxygen in the air to gain a coat of magnesium oxide, if you just want to get a bright flame
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magnesium ribbon reacts with oxygen present in air to from a protective layer of magnesium oxide on its surface. This layer is unreactive and prevents the ribbon from burning. Hence, it need to clean
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