What could happen if the Bunsen burner is ignited when the air hole is opened?

A Bunsen burner flame produces energy from burning gas. > If the air hole is open the flame burns in plenty of oxygen. Combustion is complete and a blue flame is seen.

Why should you always light the match before you turn on the gas?

It is dangerous to try to light any flammable gas fueled device more than a few seconds after it has been turned on. Since gas fumes spread very quickly, an inadvertent flame or spark nearby could ignite the gas cloud and seriously burn someone.

What happens when you close the air hole in a Bunsen burner?

If the holes are closed, the gas will only mix with ambient air at the point of combustion, that is, only after it has exited the tube at the top. This reduced mixing produces an incomplete reaction, producing a cooler but brighter yellow, which is often called the “safety flame” or “luminous flame”.

How does the amount of gas and air affect the type of flame?

Less air produces a cooler flame; more air produces a hotter flame. Air flow is optimized by looking at the flame. A fuel-rich (cool) flame is yellow and sooty. An air-rich or fuel-lean (hot) flame is much more desirable.

What is the impact of Bunsen burner in today’s society?

Thanks to many experiments and lab tests, which were carried out with a Bunsen burner, scientists are able to develop new medicines and vaccinations for all people. This has changed peoples lives to their good and sometimes even saved them!

What do you immediately do if the flame of the Bunsen burner goes out?

If the flame of a gas Bunsen burner goes out or begins to sputter, turn the wall outlet valve off immediately. The procedure for lighting an alcohol burner is to raise the wick and light it using a match. Lower the wick to shut off the alcohol burner. Allow used matches to cool before disposing of them in the trash.

Why should the match be lighted before turning on the gas in Bunsen burner?

Once your teacher has checked all of the Bunsen burners he will turn on the main gas supply. When you light a match always strike it away from you. The Bunsen will light to give a yellow safety flame. A lighted Bunsen Burner with its air holes closed giving a yellow safety flame.

Why is it important to close the air hole before lighting the Bunsen burner?

A 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.

Which part of the Bunsen burner do you twist to open or close the air hole?

If your flame is hot and blue, twist the collar to close off the air flow and produce a yellow safety flame. Close the needle valve by turning it clockwise. Close the valve completely to cut off the gas supply.