Kinetic theory and gas behaviour Quiz
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5 questions, one answer each
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1. A syringe of gas is squashed to half its volume at constant temperature. What happens to the pressure, and why?
- A. It decreases because the particles slow down
- B. It stays the same
- C. It decreases because there are fewer particles
- D. It increases because the particles hit the walls more often
2. What is 0 K called?
- A. Absolute zero
- B. Freezing point of water
- C. Room temperature
- D. Boiling point of water
3. What is -73 °C in kelvin?
- A. 346 K
- B. 73 K
- C. 200 K
- D. -200 K
4. What does Brownian motion show?
- A. Smoke particles are alive
- B. Tiny particles in air or water move constantly and randomly, colliding with larger visible particles
- C. Gas particles are larger than smoke particles
- D. Smoke particles are attracted to each other
5. A sealed can of gas is heated. Which explanation of the rise in pressure is correct?
- A. The particles get bigger
- B. There are more particles
- C. The particles hit each other more
- D. The particles move faster so they hit the walls more often and harder