Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Ideal Gas Molecules
70 practice questions
Topics covered
Practice questions
41–50 of 70
Question 41
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 42
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 43
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 44
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 45
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 46
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 47
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.
Question 48
1 mark · Easy
Answer and see the solution →State the value of absolute zero on the Celsius scale.
Question 49
1 mark · Easy
Answer and check →Which statement correctly describes absolute zero?
- A.The temperature at which water freezes.
- B.The lowest temperature possible, where particles have minimum energy.
- C.The temperature at which gases expand most quickly.
- D.The temperature at which metals melt.
Question 50
1 mark · Easy
Answer and see the solution →Write the equation that converts a temperature from Celsius to Kelvin.