Question

Iron does not burn on heating but iron filings burnnvigorously when sprinkled in the flame of a burner give reason
2marks answer
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Answer 1

Explanation:

Iron has a strong molecular force of attraction. Hence when heated it doesn't reach its ignition temperature and doesn't burn. But iron fillings when sprinkled in flames attain the ignition temperature ( as iron filings are comparatively smaller particles) and gain a larger surface area for the reaction.

Answer 2

Iron has a strong molecular force of attraction. Hence when heated it doesn't reach its ignition temperature and doesn't burn. But iron fillings when sprinkled in flames attain the ignition temperature ( as iron filings are comparatively smaller particles) and gain a larger surface area for the reaction.