Question

multiple - choice question
when should you shut the gas off to the bunsen burner? select all that apply
if the flame goes out
if the liquid you are heating is already boiling
if you smell gas
when the flame sputters

Explanation:

If the flame goes out, gas may continue to flow, posing a risk. Smelling gas indicates a leak and shutting it off is crucial. When the flame sputters, it may be a sign of an issue with gas - flow or combustion, so gas should be shut off. Boiling a liquid is a normal use - case and doesn't necessarily mean gas should be shut off.

Answer:

A. If the flame goes out
C. If you smell gas
D. When the flame sputters