Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Ideal Gas Molecules
70 practice questions
Topics covered
Practice questions
11–20 of 35 · Easy
Question 11
1 mark · Easy
Answer and check →Which of the following statements about Boyle's law is correct?
- A.The pressure and temperature of a gas are inversely proportional at constant volume.
- B.The volume of a gas decreases as its pressure increases, at constant temperature.
- C.The volume of a gas increases as its pressure increases, at constant temperature.
- D.The mass of a gas must change for Boyle's law to apply.
Question 12
2 marks · Easy
Answer and see the solution →A balloon filled with gas is left in a warm room. Answer the following questions.
(a)[1 mark]State what happens to the average kinetic energy of the gas molecules as the temperature of the room increases.
(b)[1 mark]Explain how this affects the motion of the gas particles.
Question 13
1 mark · Easy
Answer and see the solution →According to the particle model, what causes the pressure of a gas in a sealed container?
Question 14
2 marks · Easy
Answer and see the solution →A gas in a sealed syringe has a pressure of 80 kPa and a volume of 25 cm³ at constant temperature. What will its pressure be if the volume is reduced to 20 cm³? Give your answer to 2 significant figures.
Question 15
1 mark · Easy
Answer and see the solution →Give the relationship between the average kinetic energy of gas molecules and the temperature of the gas.
Question 16
1 mark · Easy
Answer and see the solution →Name one way to change the pressure of a fixed mass of gas inside a sealed container (other than changing its volume).
Question 17
1 mark · Easy
Answer and check →Which of the following equations relates the pressure and volume of a fixed mass of gas at constant temperature?
- A.p_1 V_1 = p_2 V_2
- B.p_1/T_1 = p_2/T_2
- C.V_1/T_1 = V_2/T_2
- D.p_1 V_1/T_1 = p_2 V_2/T_2
Question 18
2 marks · Easy
Answer and see the solution →A fixed mass of gas has a pressure of 80 kPa and a volume of 200 cm³. If the volume is reduced to 160 cm³ at constant temperature, calculate the new pressure of the gas.
Question 19
1 mark · Easy
Answer and see the solution →State the rule of pressure and temperature for a fixed mass of gas at constant volume.
Question 20
2 marks · Easy
Answer and see the solution →A gas has a pressure of 105 kPa at 350 K. What will be its pressure at 420 K, if the volume remains constant?