CBSE - X - Chemistry
1) is boiling of water to form water vapour a chemical change.why or why not.support your answer with example.
2) how is chemical and physical change both taking place simultaneously in a burning candle.
1) Boiling of water to form water vapour is a physical change. Over here there is only a change in the state of matter and no chemical change has occured.
2)Melting of wax is a physical change and burning of candle is a chemical change because heat energy is produced along with water vapour and carbon dioxide.
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