1) Akanksha has made two paper cups by folding a sheet of paper, she poured 50 ml 0f water in one of the cups and heated both the cups separately with a candle. a. What happens to the empty paper cup when it is heated? b. What happens to the paper cup with water?
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Answer:
When the empty paper cup is heated , it reaches its ignition temperature faster and starts burning.
Whereas when the paper cup with water is heated , it reaches its ignition temperature quite slower and thus it becomes very difficult for the paper cup to be burnt.
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Answer:
ANS. a.) - the empty paper cup will start burning and undergo a chemical change to form ash.
ANS. b.) - the paper cup will also started burning and some of the water inside it will evaporate due to heat.
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