Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
131–133 of 133 · Easy
Question 131
2 marks · Easy
Answer and check →Which of the following correctly describes the motion of particles in a liquid?
- A.Particles are very spread out and move slowly in fixed positions.
- B.Particles are tightly packed in a regular pattern and cannot move.
- C.Particles are close together but can move past each other at random.
- D.Particles are far apart and move rapidly with almost no attraction.
Question 132
4 marks · Easy
Answer and see the solution →A block of soap rests on a bathroom shelf. The mass of the soap is 200 g and its base measures 8.0 cm by 5.0 cm.
(a)[1 mark]Calculate the area of the base of the soap in m².
(b)[2 marks]Calculate the pressure the soap exerts on the shelf, stating the equation used.
(c)[1 mark]Give the correct SI unit for pressure.
Question 133
4 marks · Easy
Answer and see the solution →In an experiment, a student heats a 0.25 kg block of copper from 18 °C to 38 °C. The specific heat capacity of copper is 390 J/kg °C.
(a)[1 mark]State the equation used to calculate the change in thermal energy.
(b)[2 marks]Calculate the change in thermal energy of the copper block as it is heated.
(c)[1 mark]State what happens to the thermal energy supplied when the temperature of the copper block stops rising.