Question

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

Answer 1

Answer:

Magnesium ribbon should be cleaned with sandpaper before burning in the air. ... Magnesium very reactive element which rapidly reacts with oxygen in the air to form a white layer of magnesium oxide and this layer will not burn.

Answer 2

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ᴍᴀɢɴᴇꜱɪᴜᴍ ɪꜱ ᴀ ᴠᴇʀy ʀᴇᴀᴄᴛɪᴠᴇ ᴍᴇᴛᴀʟ. ᴡʜᴇɴ ɪᴛ ɪꜱ ᴋᴇᴩᴛ ɪɴ ᴛʜᴇ ᴏᴩᴇɴ ᴀɪʀ ɪᴛ ᴄᴀɴ ʀᴇᴀᴄᴛ ᴡɪᴛʜ ᴛʜᴇ ɢᴀꜱᴇꜱ ᴩʀᴇꜱᴇɴᴛ ɪɴ ᴛʜᴇ ᴀɪʀ. ᴄʟᴇᴀɴɪɴɢ ᴡɪʟʟ ʀᴇᴍᴏᴠᴇ ᴛʜᴏꜱᴇ ɪᴍᴩᴜʀɪᴛɪᴇꜱ ꜰᴏʀᴍᴇᴅ ᴅᴜᴇ ᴛᴏ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ ᴡɪᴛʜ ᴀɪʀ.

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ʜᴏᴩᴇ ᴛʜɪꜱ ʜᴇʟᴩᴇᴅ yᴏᴜ✌️