Question

burning of a candle is both physical and chemical change. why?​

Answer 1

★ On heating, candle wax melts and form liquid wax. It is a physical change. Since it again turns into solid wax on cooling. This is a reversible change. Chemical Changes in Burning Candle.

★ When you light the candle, the wax present near the wick will melt. Wick absorbs the liquid wax. The liquid wax vaporizes due the heat produced by the flame. This wax vapor near to flame burns and gives new substances like Carbon Dioxide, Carbon soot, water vapours, heat and light. This is an irreversible change.

Answer 2

physical change is because wax can be melted we can make candle again from them

chemical change is because half of wax is burning which cannot make candle again