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Answer: The phenomena of candle burning involves both physical and chemical changes. When a candle is lit, the oxygen in the air reacts and carbon dioxide is produced. CO2 is generated as a new substance.
As a result, it’s a chemical change. There is no new substance generated when the candle melts, and the molten wax may be solidified and converted into a candle again, making it a reversible transformation. As a result, it is possible to say that the alteration is physical.
