Question

The flame of a Bunsen burner is ----- when the air hole is open and ---- when the air hole is closed.

Answer 1

Answer:

The flame when the air-hole is open is blue, luminous, and clean. When the air-hole is closed, however, there is less oxygen available. This results in incomplete combustion of the gas.

Explanation:

Answer 2

Answer:

roaring blue flame - when air hole is open

Yellow flame- when air hole is closed

Explanation:

The flame when the air-hole is open is blue, luminous, and clean. When the air-hole is closed, however, there is less oxygen available. This results in incomplete combustion of the gas. The color of the flame changes to yellow and the flame is wavy