Melting of wax is a physical change as burning of candle is a chemical change. Why???? <,> O
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When Wax melts due to heat, the composition (chemical) does not change. It only changes from solid to liquid and changes shape..
When candle burns near the flame, it evaporates into air after a chemical reaction... Candle burns with oxygen in the heat and produces carbon dioxide gas. So we cannot get back candle using normal methods (physical) ..
When candle burns near the flame, it evaporates into air after a chemical reaction... Candle burns with oxygen in the heat and produces carbon dioxide gas. So we cannot get back candle using normal methods (physical) ..
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