Question

how can you say that burning of candle is both physical and chemical change?

Answer 1

Burning of coal is both physical and chemical change as when the wax is melting then the melted wax can be converted to Vats Again by cooling it and the thread inside the candle burns to become ash so it cannot be converted to thread against so it is a chemical change

Answer 2

burning of candle is both physical hi chemical change as by burning of candle it releases smoke which is a factor of chemical change as solid is turned into gas....
and whereas its about chemical change u will observe that after melting up of candle when it solidifies on room temperature it still not change its property of wax... 

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