Exam-style question
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How does the pressure of a gas change when its temperature is increased at constant volume?.
- A.The pressure decreases.
- B.The pressure increases.
- C.The pressure remains constant.
- D.The pressure becomes zero.
Model answer
What a good answer should say
- The pressure increases.
Explanation
Why this works
When the temperature of a gas increases at constant volume, the kinetic energy of the gas molecules increases, leading to more forceful collisions with the container walls. This results in an increase in pressure.
The implication is that temperature and pressure are directly related when volume is held constant, illustrating the principles of gas behavior.
Common mistake
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