Diffusion and gas behaviour Quiz
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5 questions, one answer each
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1. Which change makes diffusion faster?
- A. Cooling the substance
- B. Raising the temperature
- C. Using heavier particles
- D. Putting the substance in a solid
2. Brownian motion is evidence that
- A. particles in a gas or liquid are in constant random motion
- B. particles are alive
- C. solids cannot move
- D. atoms are all the same mass
3. What causes gas pressure?
- A. Gas particles pushing each other
- B. Gas particles sticking together
- C. Gas particles hitting the walls of the container
- D. Gas particles being heavy
4. A sealed rigid container of gas is heated. What happens to the pressure?
- A. It decreases
- B. It stays the same
- C. It becomes zero
- D. It increases
5. Which gas diffuses fastest at the same temperature?
- A. Hydrogen chloride (relative mass 36.5)
- B. Ammonia (relative mass 17)
- C. Chlorine (relative mass 71)
- D. Carbon dioxide (relative mass 44)