Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
The gas laws
16 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
3 marks · Normal
Answer and see the solution →A sample of gas is in a cylinder at a pressure of atm and a volume of dm. The gas is compressed to a volume of dm at constant temperature.
Calculate the new pressure of the gas.
Question 2
2 marks · Normal
Answer and see the solution →Explain, with reference to particle motion, why increasing the temperature of a gas at constant volume increases the gas pressure.
Question 3
3 marks · Normal
Answer and see the solution →A fixed mass of gas has pressure Pa at K. The temperature is raised to K and the volume remains constant.
Calculate the new pressure of the gas.
Question 4
4 marks · Normal
Answer and see the solution →A student investigates Boyle's law using a sealed syringe, as shown.
The initial pressure is kPa and the initial volume is cm. By pushing the plunger, the volume is changed to cm while temperature remains constant.
(a)[1 mark]State Boyle's law.
(b)[3 marks]Calculate the final pressure inside the syringe.
Question 5
1 mark · Normal
Answer and check →When a gas is heated at constant pressure, which of the following will increase?
- A.Its density
- B.Its volume
- C.Its mass
- D.Its pressure
Question 6
4 marks · Normal
Answer and see the solution →A student fills a flexible balloon with air and seals it. The pressure inside the balloon is kPa at C. The balloon is then placed in an oven at C and the pressure reaches kPa.
(a)[1 mark]Convert all temperatures to Kelvin.
(b)[3 marks]Use the gas law to calculate the new volume of the balloon if the initial volume was L.
Question 7
3 marks · Normal
Answer and see the solution →Describe how you could investigate the relationship between the pressure and volume of a trapped gas in a school laboratory, stating the measurements you would take to confirm Boyle's law.
Question 8
3 marks · Normal
Answer and see the solution →A car tyre contains air at a pressure of 230 kPa at 15°C. After a drive, its temperature rises to 40°C. Assume the volume stays constant.
Calculate the final pressure in the tyre. Give your answer to 2 significant figures.