Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Ideal Gas Molecules
70 practice questions
Topics covered
Practice questions
1–10 of 35 · Normal
Question 1
4 marks · Normal
Answer and see the solution →The diagrams below show the arrangement of particles in three different states of matter.
Arrangement of particles in three states of matter (a)[1 mark]Identify which numbered group of circles (1, 2 or 3) represents a gas.
(b)[2 marks]State two differences between the arrangement and movement of the particles in a solid and those in a gas.
(c)[1 mark]Explain why solids are not easily compressed.
Question 2
3 marks · Normal
Answer and see the solution →Explain, using the particle model, how gas pressure is produced in a sealed container and how an increase in temperature affects the pressure.
Question 3
1 mark · Normal
Answer and check →Which statement best explains why liquids have a much higher density than gases?
- A.Particles in liquids are much closer together than in gases.
- B.Particles in liquids are moving faster than in gases.
- C.Particles in liquids are arranged in a regular pattern.
- D.Particles in liquids do not move.
Question 4
2 marks · Normal
Answer and see the solution →State the three main states of matter found on Earth and for each one give one property that distinguishes it from the other two.
Question 5
3 marks · Normal
Answer and see the solution →Particle spacing and compressibility in different states State How close are particles? Easily compressed? Solid Very close together No Liquid Very close together No Gas Far apart Yes Use the table to compare and explain the reason for the compressibility of gases, solids and liquids.
Question 6
2 marks · Normal
Answer and see the solution →Describe one similarity and one difference between the arrangement of particles in a liquid and a gas.
Question 7
2 marks · Normal
Answer and see the solution →Why do particles in a solid only vibrate rather than move freely? Explain your answer in terms of the forces between the particles.
Question 8
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 9
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 10
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.