Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Solids, Liquids and Gases
279 practice questions
Topics covered
Practice questions
71–80 of 279
Question 71
1 mark · Easy
Answer and check →Which of the following changes will decrease the density of a block of wood?
- A.Decrease its mass only
- B.Increase its mass and volume by the same proportion
- C.Decrease its volume only, mass unchanged
- D.Increase its mass only, volume unchanged
Question 72
2 marks · Easy
Answer and see the solution →A small plastic cube has a mass of 9.0 g and a volume of 12.0 cm³. Calculate its density in g/cm³.
Question 73
1 mark · Easy
Answer and see the solution →State one property, besides density, that distinguishes a solid from a gas.
Question 74
2 marks · Easy
Answer and see the solution →Describe how you would measure the mass and volume of a small glass marble to calculate its density. Do not include any calculations.
Question 75
2 marks · Easy
Answer and see the solution →A liquid has a mass of 415 g and completely fills a measuring cylinder with a volume of 500 cm³. Calculate the density of the liquid, giving your answer in g/cm³.
Question 76
3 marks · Easy
Answer and see the solution →A student wants to compare the density of water and cooking oil in the lab.
(a)[1 mark]Describe how she could measure the volume of 100 g of cooking oil.
(b)[1 mark]State why the measuring cylinder must be placed on a flat surface when finding the volume.
(c)[1 mark]Explain why repeating the measurement several times and averaging is useful.
Question 77
1 mark · Easy
Answer and see the solution →A stone is denser than water. What will happen if you place the stone in a beaker of water? State why.
Question 78
2 marks · Normal
Answer and see the solution →A metal cube has a mass of 540 g and a volume of 200 cm³.
Calculate the density of the metal, giving your answer in kg/m³.
Question 79
4 marks · Normal
Answer and see the solution →Describe an experiment you could use to find the density of a small, irregular solid object such as a stone.
Question 80
2 marks · Normal
Answer and see the solution →A measuring cylinder contains 80 ml of oil. The mass of the oil is found to be 68 g.
Calculate the density of the oil in kg/m³. Give your answer to 2 significant figures.