It needs to be open to create the hot, blue flame that roars. If the air hole is shut, the flame will burn yellow, similar to a candle.
To heat chemicals or substances in science lab for experiment. There is an air hole in the Bunsen burner where you can screw loose to have open air hole that is the blue flame which is hotter. When there is a close air hole then the flame would be orange in color which is not as hot compared to the blue flame.
Blue or heating flame.
The four(4) flame types of Bunsen burner is depending on flow through the throat holes (holes on the side of the Bunsen burner -- not to be confused with the needle valve for gas flow adjustment). 1) air hole closed (Safety flame used for when not in use or lighting). 2) air hole slightly open. 3) air hole half open. 4) air hole almost fully open (this is the roaring blue flame).
The parts of a Bunsen burner has collar,base.air hole and barrel. Collar : Adjust size of air hole Base: Support Bunsen Burner Air hole: Allow air to enter air hole Barrel:To ensure the flame is adjusted to a suitable position
It is less hot
The flame will be blue when the hole is fully open on a Bunsen burner. This is because the complete combustion of the gas produces a hotter flame with a blue color.
Air hole fully open gives a 'roaring blue flame'
blue
To heat chemicals or substances in science lab for experiment. There is an air hole in the Bunsen burner where you can screw loose to have open air hole that is the blue flame which is hotter. When there is a close air hole then the flame would be orange in color which is not as hot compared to the blue flame.
The safety flame on a Bunsen burner is used when the burner is not in use to prevent accidental fires. It is a small, non-luminous flame that burns with a blue color and is created by adjusting the air hole on the burner.
The flame in a Bunsen burner with the air hole half open is called a yellow, luminous flame. This type of flame is inefficient as it produces soot and is cooler compared to a blue flame. Adjusting the air hole helps control the type of flame produced by the Bunsen burner.
A blue flame is formed when the air hole on the Bunsen burner is open. The blue flame indicates complete combustion of the gas, with plenty of oxygen present for the reaction. This type of flame is hotter and more efficient for heating purposes.
To change the type of Bunsen burner flame, adjust the air hole at the base of the burner. Closing the air hole will produce a yellow, sooty flame (reducing flame) while opening it will create a blue, non-sooty flame (oxidizing flame).
The air hole on a Bunsen burner controls the amount of oxygen that mixes with the gas. By adjusting the air hole, you can control the color and intensity of the flame produced by the burner. More air creates a hotter, blue flame, while less air creates a cooler, yellow flame.
Blue or heating flame.
The tip of the blue cone is the hottest part of the Bunsen burner flame.
The size of the flame on a Bunsen burner can be controlled by adjusting the air hole at the base of the burner. Opening the air hole wider will increase the oxygen supply, resulting in a hotter, more blue-tinged flame, while partially closing the air hole will produce a cooler, yellow-tinged flame.