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How Does A Candle Burn?

The secret of the candle lies in the wick. A matchstick ignites the wick. The heat of the flame melts the wax of the candle. The liquid wax rises up in the wick, and more it evaporates, more higher it rises. The vapour burns. Wax is made up of carbon (C) and hydrogen (H2). Both elements react with oxygen (O2) during burning, whereby water vapor, soot, and waste gases like carbon monoxide (CO) and carbon dioxide (CO2) are produced. This also gives the colours to the candle flame yellow light from carbon and the blue light from water vapours.
The golden flame of the candles exudes a mood that inspires us to think.

Candle Burn In Space
Pic Credits - NASA
In space, the flame of a candle slumps down faster to a bluish sphere and expands. The consumed air does not rise up at the wick because of the absence of gravity. The candle extinguishes due to lack of oxygen.