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It's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!"
How would you respond to Roger?
A) Roger is incorrect. The melting wax is a physical change but there is no chemical change taking place.
B) Roger is correct. Lighting the match is a chemical change and burning the candles is a physical change.
C) Roger is correct. The melting wax is a physical change and the burning candle wick is a chemical change.
D) Roger is incorrect. Only a chemical change is taking place as evidenced by the light and heat of the burning candles.

Answer :

Benny132
This example is an controversial matter because melting an candle is considered as both physical change and chemical change because no new substances were made by melting an candle. The final answer is C.

Melting of wax is a physical change and chemical change is the burning of candle.

What is chemical and physical changes?

Chemical changes are those changes by which composition of the original matter changes and physical changes are those changes by which only appearance of the matter changes.

In the given activity:

  • Melting of wax is a physical change because during this composition of wax not changes but only outer structure changes.
  • Burning of candle and lighting the match are chemical change as it produces energy in the form of heat and light.

Hence, Roger is correct ie. The melting wax is a physical change and the burning candle wick is a chemical change.

To know more about physical and chemical changes, visit the below link:
https://brainly.com/question/17166994

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