Check sibling questions

When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.

 

Answer:

When a candle burns, both physical and chemical changes take place.

  • Physical change - Melting of wax
  • Chemical change - Burning of wick

Another example that can be considered is of LPG. 

  • The gas we use in the kitchen is called liquefied petroleum gas (LPG). 
  • In the cylinder it exists as a liquid .
  • When it comes out from the cylinder it becomes a gas (Physical change) and then it burns (Chemical change) producing vapour and smoke.

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo