Hold a glass tube with a pair of tongs and introduce it's one end in the dark zone of non flickering candle flame. Bring a lighted matchstick near the other end of glass tube. You see a flame. what is it that produces a flame? *
Added by John W.
Step 1
A candle flame consists of different zones: the innermost zone is the dark zone, which is the least hot and contains unburnt wax vapors; the middle zone is the luminous zone, where incomplete combustion occurs; and the outermost zone is the non-luminous zone, Show more…
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