Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
141–150 of 279
Question 141
5 marks · Normal
Answer and see the solution →A student is investigating the density of a small irregular-shaped stone. She records the following measurements:
Measurements taken by the student. Measurement Value Mass of stone 65 g Initial volume of water in measuring cylinder 85 cm³ Final volume of water + stone 107 cm³ (a)[1 mark]Calculate the volume of the stone.
(b)[2 marks]Calculate the density of the stone in g/cm³.
(c)[2 marks]If the stone is placed on a sandy surface and exerts a downward force equal to its weight, with a contact area of 1.3 cm², calculate the pressure (in Pa) the stone exerts on the sand. (Take g = 10 N/kg; 1 cm² = 0.0001 m²)
Question 142
1 mark · Easy
Answer and see the solution →Give the scientific term for the energy required to raise the temperature of 1 kg of a substance by 1 °C.
Question 143
2 marks · Easy
Answer and see the solution →State one property of liquids that is also true for gases, and one property that is different between liquids and gases.
Question 144
3 marks · Easy
Answer and see the solution →The diagram below shows particles in one of the three states of matter.
Arrangement of particles (a)[1 mark]Identify the state of matter shown.
(b)[2 marks]Describe the arrangement of the particles in this state.
Question 145
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 146
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 147
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 148
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 149
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 150
4 marks · Normal
Answer and see the solution →The diagram shows particles in three different states of matter: solid, liquid, and gas.
(a)[2 marks]Describe the arrangement and movement of particles in a solid.
(b)[2 marks]Explain why solids cannot be easily compressed, using ideas about particles.