Question

Why do you have the oxygen hole closed when you light the burner?

Answer 1

Answer:

If you close the holes, the only place the flame can get oxygen is at the top of the tube, giving you a luminous flame. But if you open the holes, the flame can get oxygen from the top and the bottom both, making it burn better - a non-luminous flame

Explanation:

Answer 2

Answer:

you close the holes, the only place the flame can get oxygen is at the top of the tube, giving you a luminous flame. But if you open the holes, the flame can get oxygen from the top and the bottom both, making it burn better - a non-luminous flame

Explanation:

lighted Bunsen Burner with its air holes closed giving a yellow safety flame. You must never use the yellow safety flame to heat something. Before you can heat something you must open the air-holes by turning the metal collar. The more the air holes are open, the more fierce the Bunsen flame. please mark me brainlist