Ideal Gases Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. What causes a gas to exert pressure on the walls of its container?
- A. Molecules sticking to the walls
- B. Random collisions of moving molecules with the walls
- C. The container expanding slightly
- D. Gravity pulling molecules downward
2. What is absolute zero in degrees Celsius?
- A. 0 °C
- B. 100 °C
- C. −100 °C
- D. −273 °C
3. A fixed mass of gas is compressed to half its original volume at constant temperature. What happens to its pressure?
- A. It halves
- B. It stays the same
- C. It doubles
- D. It quarters
4. A sealed rigid container of gas at 400 K and 100 kPa is cooled to 200 K. What is the new pressure?
- A. 25 kPa
- B. 50 kPa
- C. 100 kPa
- D. 200 kPa
5. Two identical sealed containers hold the same gas at the same volume, but container B is at a higher Kelvin temperature than container A. Which statement correctly compares them?
- A. Container B has lower pressure because its molecules move slower
- B. Container B has higher pressure because its molecules have greater average kinetic energy and collide more forcefully
- C. Both containers have identical pressure regardless of temperature
- D. Container A has higher pressure because cooler gases are denser