Question

bunsen burner safety
the safety flame is the:
○ blue flame
○ yellow - orange flame
○ invisible flame

Explanation:

In a Bunsen - burner, the safety flame is yellow - orange. A blue flame is a hot, efficient, and complete - combustion flame. An invisible flame is dangerous as it is hard to detect. The yellow - orange safety flame is more visible and serves as a warning that the burner is on.

Answer:

Yellow - orange flame