Blue or heating flame.
The closed flame (orange) is only ever used when turning on the bunsen burner or when you are leaving it for any amount of time to insure the safety of your class mates. The open flame (blue) is used at all other times. Please note it can be hard to see the blue flame so it is important that you stay aware and safe as it is often as hot as 700oC.
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.
When you want to heat something!! well wen it is closed is when it is at its hottest, its a heating flame, open is for safety that's when it is at its coolest like a safety flame. what i rote when you want to heat something is rong at the top. that's for if it is closed
An open flame above an air hole on a Bunsen burner is called a roaring flame. It occurs when the air hole is fully open and allows for more oxygen to mix with the gas, creating a hotter and louder flame. Adjusting the air hole can help control the flame temperature and intensity.
When the air hole is half open, the flame is called a "medium" or "moderate" flame. This means it is not burning too high or too low and is at an optimal level for cooking. Adjusting the air hole can help control the intensity of the flame.
Blue or heating flame.
A Bunsen burner flame with the air hole half open is typically called a "luminous flame." It appears yellow and produces soot due to incomplete combustion, indicating a fuel-rich environment. Adjusting the air hole allows for better control of the flame temperature and combustion efficiency.
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.
To control the type of Bunsen flame, adjust the amount of air mixing with the gas using the collar at the base of the Bunsen burner. To create a hotter, blue flame, increase the air supply by opening the collar more. To produce a cooler, yellow flame, reduce the air supply by closing the collar slightly.
When the air hole of a Bunsen burner is half open, the sound produced is usually a low-pitched roaring noise, indicating that the flame is receiving the right amount of air for combustion. It should be a steady sound, with a stable flame. Adjusting the air hole helps control the intensity of the flame.
A Bunsen flame is hottest when the air hole is open. When the air hole is open, more oxygen can mix with the gas, resulting in a hotter and more efficient flame. Closing the air hole restricts the amount of oxygen, leading to a cooler flame.
because it can harm you or your clothes so you should never play around with half open burners they let out blue flame which is very dangerous because it is the dirtiest falmeRead more: When_should_you_use_a_Bunsen_burner_with_the_collar_half_open
Air hole fully open gives a 'roaring blue flame'
The process of combustion occurring without an open flame is called spontaneous combustion. This phenomenon usually happens when a material self-heats to its ignition temperature without an external heat source.
To control the heat on a Bunsen burner, adjust the air supply by turning the collar at the base of the burner, which regulates the amount of air mixed with the gas. For a hotter flame, open the collar to allow more air in, resulting in a blue, hotter flame. For a cooler, yellow flame, close the collar to limit airflow. Additionally, adjust the gas flow using the gas valve to fine-tune the flame's intensity.