Question

why candle burns with flame and coal does not burn with flame​

Answer 1

Explanation:

Wax is the substance which vaporizes during burning thereby giving flame. On the other hand, Charcoal does not vaporize and so does not form a flame. Charcoal is a combustible substance and glows while burning. It does not form flame because it is natural lump variety made from hardwood.

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Answer 2

Answer:

wax is a substance which vapourises while burning .wax is also a petroleum product and it is used for making candles while burning the wax melts and forms flame on the othe hand coal does not vapourised and do not produces flame