Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
Boyle's law
16 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
2 marks · Normal
Answer and see the solution →State Boyle's law in terms of the relationship between the pressure and volume of a fixed mass of gas at constant temperature.
Question 2
3 marks · Normal
Answer and see the solution →Explain, in terms of the particle model, why increasing the temperature of a gas at constant volume increases the pressure of the gas.
Question 3
3 marks · Normal
Answer and see the solution →A sealed syringe contains 40 cm³ of air at a pressure of 100 kPa. The syringe is slowly compressed to a volume of 16 cm³ at constant temperature. Calculate the final pressure inside the syringe.
Question 4
4 marks · Normal
Answer and see the solution →A student investigates Boyle's law using a sealed syringe containing air. She changes the volume and measures the pressure at constant temperature.
(a)[1 mark]Describe one step the student should take to make sure the temperature of the gas stays constant during the experiment.
(b)[2 marks]The student records the following results:
Volume (cm³) Pressure (kPa) 50 80 40 100 32 125 Show that the product of pressure and volume is roughly constant for these readings.
(c)[1 mark]Suggest why the results might not be perfectly constant.
Question 5
2 marks · Normal
Answer and see the solution →The graph below shows the relationship between the pressure and volume of a fixed mass of gas at constant temperature.
Pressure-volume graph for a fixed mass of gas at constant temperature. Describe the relationship shown by the graph and explain why this relationship occurs using Boyle's law.
Question 6
2 marks · Normal
Answer and see the solution →A bicycle pump gets warm after inflating a tyre quickly. Using the particle model, explain briefly why this happens.
Question 7
1 mark · Normal
Answer and check →Which option best describes the change in particle movement when a gas is heated at constant volume?
- A.Particles move slower and pressure decreases.
- B.Particles move faster and pressure increases.
- C.Particles move at the same speed but pressure increases.
- D.Particles move at the same speed and pressure stays the same.
Question 8
4 marks · Normal
Answer and see the solution →Figure 1 shows a diagram of an air-filled syringe with its tip sealed. The plunger is pressed in to reduce the volume, while the temperature is kept constant.
An air-filled sealed syringe. (a)[2 marks]Explain what happens to the pressure inside the syringe as the plunger is pushed in (the volume decreases and temperature stays the same).
(b)[2 marks]Describe the motion of the air particles inside the syringe as the plunger is pressed in at constant temperature.