Question

in the model above, a volume of gas is held in a container. over time, the container is heated by the flame at the bottom. all but one statement might describe what is happening inside the containers from left (v1) to right (v2)
a an increase in particle energy causes an increase in pressure
b the change in temperature causes the particles to increase in number
c as the temperature increases, the kinetic energy of the gas also increases
d (text partially obscured, but related to gas behavior under heating)

Explanation:

To solve this, we analyze each option based on gas behavior (Kinetic Molecular Theory):

• Option A: Heating increases particle energy (kinetic energy), leading to more frequent/forceful collisions, increasing pressure. Correct.
• Option B: Temperature (heating) affects particle energy and motion, but does not change the number of gas particles (mass is conserved in a closed container). So this statement is incorrect (the "ALL BUT ONE" implies we find the false statement).
• Option C: Heating (temperature increase) increases the kinetic energy of gas particles (they move faster). Correct.
• Option D: Higher kinetic energy means particles move faster, increasing the frequency of collisions with the container walls. Correct.

Answer:

B. The change in temperature causes the particles to increase in number