In both Part A and Part B of this activity, you investigated the
effects of temperature on gas particle movement. The following
are two possible explanations for the effects you observed:
• The number of air particles inside the test tube (and syringe)
increased with an increase in temperature, and the number of
air particles decreased with a decrease in temperature.

• The number of air particles inside the test tube (and syringe)
stayed the same, but they took up more space when the
temperature increased and took up less space when the
temperature decreased.

Which explanation do you agree with? Create an argument using
evidence from your investigation to support your decision.


Help me. Please. I need help and I am clueless.