Question

If a flame test were performed on a test tube where oxygen gas was produced
Group of answer choices

bubbles would form

the gas would ignite (catch on fire)

a popping noise would occur

there is no positive flame test for oxygen gas

the flame would extinguish

Answer 1

Oxygen supports combustion, so a glowing splint will relight and a burning splint will burn more vigorously. Technically oxygen itself does not “catch on fire,” so if you must pick from the choices the closest is "the gas would ignite (catch on fire)," but the correct observation is that the flame/splint would intensify or a glowing splint would relight.