Lumminous and non-luminous flames

Now I am going to talk about the luminous and the non- luminous flames.

Luminous flame:
-is produced when the air-holes of the bunsen burner are closed and very little air is allowed to mix with the gas
-orange in colour
-appears flickering and unsteady
-not very hot
Non-luminous flame:
-occurs when air-holes of the bunsen burner are open, allowing air into the burner
-blue in colour
-burns steadily
-hotter than the luminous flame
-hottest part of the flame is just above the tip of the blue zone.