GIVE REASONS :1 Iron does not burn on heating but iron filings burnnvigorously when sprinkled in the flame of a - Science - Metals and Non-metals

Question

GIVE REASONS :1 Iron does not burn on heating but iron filings
burnnvigorously when sprinkled in the flame of a burner

Kalon Acharjee · Accepted Answer

Any substance will burn only if
it is heated beyond its ignition temperature
The size of iron metal is bigger than compared to iron filings so
the fire can only heat the big iron and make it red hot but in case
of filings they are so small that the whole particle can be easily
heated upto its ignition temperature and burn Also the surface area
of iron fillings is more, hence they burn vigorously in flame

GIVE REASONS :1 Iron does not burn on heating but iron filings burnnvigorously when sprinkled in the flame of a burner