Question

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?

Answer 1

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.

Hope u have a good day !!!

Answer 2

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.