When you light the Bunsen burner, the flame will be yellow - this is often known as the ‘safety flame’ because you can see it. The blue flame is used for heating.

The Bunsen burner is still ‘one of the most valuable inventions ever made’ as an obituary of its inventor claimed in 1899. ... When you add air to the burner you will see a blue flame, ...

THE green tint referred to by “S.” (supra) as imparted by zinc sulphate to the Bunsen flame is only observed whilst the water of crystallisation contained in the salt is being given off; the ...

A Bunsen burner would usually be on a blue flame during an experiment. When the Bunsen burner is not being used, it should either be on the yellow safety flame so that others can see it, or turned ...