ELA 963 Fire Hazards Practice Test

If in powdered form, aluminum and bronze are flammable.

Only bronze True Only aluminum False

Correct Answer:

True

Explanation:

Metal powders burn much more readily than the solid metal because tiny particles have a lot of surface area exposed to oxygen, so oxidation happens quickly and can propagate through a dispersed cloud of dust. Aluminum powder is a well-known flammable dust and can ignite and burn vigorously when suspended in air. Bronze, while less common, also becomes flammable when finely divided; copper-tin particles can oxidize rapidly in dust form and ignite if there’s an ignition source. So the statement is true: in powdered form, both aluminum and bronze are flammable.

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