Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
71–80 of 133 · Easy
Question 71
2 marks · Easy
Answer and see the solution →Explain why gases are easy to compress but solids are not. Give a reason referring to the particle model.
Question 72
2 marks · Easy
Answer and see the solution →Calculate the increase in thermal energy (in joules) needed to raise the temperature of 200 g of water by 5 °C. (The specific heat capacity of water is 4200 J/kg°C)
Question 73
1 mark · Easy
Answer and check →Which of these statements best describes the arrangement of particles in a liquid?
- A.They are tightly packed, arranged in a regular pattern.
- B.They are close together but can move past one another.
- C.They are far apart and move randomly.
- D.They are fixed in place and cannot move.
Question 74
3 marks · Easy
Answer and see the solution →A block of aluminium weighs 0.5 kg. Its specific heat capacity is 900 J/kg°C.
(a)[2 marks]Calculate the energy required to heat the block from 15 °C to 25 °C.
(b)[1 mark]Explain what would happen to the particles in the aluminium block as its temperature increases.
Question 75
2 marks · Easy
Answer and see the solution →A physics student says: “Two blocks of different materials, each of mass 1 kg, receive the same amount of energy, but one heats up more than the other.” Explain, using the concept of specific heat capacity, why this happens.
Question 76
1 mark · Easy
Answer and see the solution →State the SI unit of specific heat capacity.
Question 77
2 marks · Easy
Answer and see the solution →A student heats a 0.25 kg aluminium block from 20 °C to 40 °C, supplying 2,200 J of energy. Calculate the specific heat capacity of aluminium.
Question 78
1 mark · Easy
Answer and see the solution →Name two pieces of apparatus you would use to measure the temperature change in a specific heat capacity experiment.
Question 79
2 marks · Easy
Answer and see the solution →Explain why it is important to use insulation when measuring the specific heat capacity of a substance.
Question 80
3 marks · Easy
Answer and see the solution →A group of students wants to determine the specific heat capacity of a 0.3 kg sample of metal, using the apparatus shown.
(a)[1 mark]State the equation used to calculate the specific heat capacity (c) of the metal.
(b)[2 marks]List two measurements (other than mass) that the students must record during the experiment.