13. Hanna can still pump air in the party balloon even though it is already inflated. What explains this phenomenon?

A Balloons look better if its size is bigger.

B. Balloons are made up of plastic.

C. The air inside the balloon is hot.

D. Air molecules can be compressed

14. Assuming the gas in a container remains at a constant temperature, how could you increase the gas pressure in the container a hundredfold?

A. Increase the amount of gas in the container by a factor of 100.

B. Decrease the volume of the container to 1/100 from its original size.

C. either A or B, but not at the same time

D. both A and B at the same time

15. What is most likely to happen when an aerosol can is heated?

A it will be deformed.

B. It will stay the same.

C. It will eventually explode.

D. It will tarnish.
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