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🔥 Burning of Magnesium Ribbon – Explanation

When a magnesium ribbon is burned in air, it reacts with oxygen to form magnesium oxide (MgO), producing a bright white flame and white ash.


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Chemical Reaction:

2Mg (s) + O_2 (g) → 2MgO (s)


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Observation:

The magnesium ribbon burns with a dazzling white flame.

After burning, it leaves behind a white powdery ash, which is magnesium oxide (MgO).



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Precautions:

1. Clean the ribbon with sandpaper before burning — this removes the oxide layer formed on its surface, which would otherwise slow down the reaction.


2. Do not look directly at the flame — it is very bright and can harm your eyes.


3. Use tongs to hold the ribbon while burning.




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Word Equation:

Magnesium + Oxygen → Magnesium Oxide


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Uses:

Demonstrates combustion and oxidation reactions.

The white MgO formed is basic and used in medicine and refractory materials.



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