What is fire? Is it a material or energy or something else? Please explain it to me. My friend asked me this. I am stuck with this problem.

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    $\begingroup$ See here for an excellent overview of the chemistry of fire from user Ben Norris and here for some insights from the great Feynman. $\endgroup$ – Nicolau Saker Neto Jan 19 '14 at 14:58
  • $\begingroup$ I think you should read the question linked by Nicolau if this don't fulfill your thirst of knowledge try to be more specific... ;-) $\endgroup$ – G M Jan 20 '14 at 22:55
  • $\begingroup$ @Neto why not to post this comments as an answer? So the question will be no longer appear as an unanswered question. $\endgroup$ – Jaroslav Kotowski Jan 21 '14 at 13:06