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



  • Magnesium is a highly reactive element
  • When kept open in the air, it reacts with the atmospheric oxygen to form Magnesium Oxide (MgO)
  • The MgO layer does not burn or slows down the burning process and thus should be removed
  • So the Magnesium ribbon should be cleaned with a sandpaper before burning to prevent the impurities deposited on the Magnesium ribbon from interfering in the reaction
  • When cleaned, only pure Magnesium is present and burns in air with a dazzling flame
  1. Class 10
  2. Chapter 1 Class 10 - Chemical Reactions and Equations (Term 1)

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CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo