Question

Give three reasons why melting of wax is considered a physical change while burning of a candle is considered a chemical change .

PLEASE ANS QUICKLY

Answer 1

when we melt the wax it's properties are not change ....no new substance is formed .
it's only changes it's state so ... physical change
in burning of candle new substances are formed ...it is irreversible..so.. chemical change

Answer 2

first reason that melting of wax is a physical change because it solidifies and became normal.... no state change,
its chemical composition remains same..
its colour and smell didn't change even..

burning of candle is a chemical change because :-
it evolves heat
there is a chemical reaction
release of gas is there..

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