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It is yellow.
the colour of the roaring flame is blue
Safety flame
The blue flame of the Bunsen burner is when it is hottest. The yellow flame is the safety flame. you should always start the burner on the safety flame which is produced when the holes on its base are closed.
when you light up the burner you should see that the Bunsen burners air hole is closed that is the safest flame
The blue flame.
It is yellow.
the colour of the roaring flame is blue
Blue and purple
Safety flame
The blue flame of the Bunsen burner is when it is hottest. The yellow flame is the safety flame. you should always start the burner on the safety flame which is produced when the holes on its base are closed.
You turn the air admittance ring at the base of the Bunsen burner until it is fully open. this allows the hottest flame to be produced and has a blue colour
a Bunsen burner flame can be 20* to 2000*
The silent flame on the Bunsen burner is the yellow/orange flame.
when you light up the burner you should see that the Bunsen burners air hole is closed that is the safest flame
its a orange colour when closed and a blue colour when is open
Largeley blue but with yellow bits.