Particle Motion in Gases Quiz
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5 questions, one answer each
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1. Gas temperature is related to the:
- A. Colour of the gas
- B. Average kinetic energy of the molecules
- C. Volume of the container only
- D. Mass of the container
2. Gas pressure is caused by:
- A. Molecules sticking to the container walls
- B. Molecules colliding with the container walls
- C. Molecules losing mass
- D. Gravity acting on the gas
3. At constant volume, if the temperature of a gas increases, its pressure:
- A. Decreases
- B. Stays the same
- C. Increases
- D. Becomes zero
4. A gas at 120 kPa and 5 m³ is compressed to 2 m³ at constant temperature. What is the new pressure?
- A. 48 kPa
- B. 150 kPa
- C. 240 kPa
- D. 300 kPa
5. (Physics only) Why does using a bicycle pump quickly make the barrel feel warm?
- A. Friction with the ground heats it
- B. Doing work on the gas increases its internal energy, raising its temperature
- C. The gas loses mass
- D. The pressure decreases, cooling the gas