Question

why should a magnesium ribbon be cleaned before burning in air​

Answer 1

Hi buddy here is your answer

This is because Mageniusm get easily explore to oxygen and form magnesium oxide on its outer coating so therefore we need to rub magnesium ribbon with a sand paper before doing an experiment.

Hope it help you

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Answer 2

if we will not clean the magnesium ribbon before burning in air it will create a large magnesium flames and very shiny which can affect our eyes