Question

Give reason wax burns with a flame whereas charcoal does not. Explain in detail

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Answer 1

Answer:

Step-by-step explanation:

The substances which vapourise  during burning, give flames. For  example, kerosene oil and molten wax  rise through the wick and are vapourised  during burning and form flames.  Charcoal, on the other hand, does not  vapourise and so does not produce a  flame.

this answer can be found on ncert science class 8 chapter combustion and flames page 71 below activity 6.5 .

Answer 2

coal or charcoal burns with just a glow red and gives out heat without flame however LPG burns with flame, this is because a flame is produced only when gaseous substances burn. When wood or charcoal is ignited, the volatile substance present in it vapourizes and burns with a flame in the beginning

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