Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Properties and uses of some metals
19 practice questions
Practice questions
1–10 of 19
Question 1
1 mark · Easy
Answer and see the solution →State one reason why aluminium resists corrosion.
Question 2
3 marks · Easy
Answer and see the solution →Brass is an alloy made from copper and zinc. Use your knowledge of alloys to answer the following:
(a)[1 mark]Define the term "alloy."
(b)[2 marks]Explain, in terms of structure, why brass is harder than pure copper.
Question 3
2 marks · Easy
Answer and see the solution →Explain why steel is an alloy and why it is harder than pure iron.
Question 4
3 marks · Easy
Answer and see the solution →The table shows properties of two metals.
Properties of metals Metal Density (g/cm³) Main Use Aluminium 2.7 Aircraft bodies Copper 8.9 Electrical wiring (a)[1 mark]Which metal in the table has the lower density?
(b)[1 mark]State the main use of copper shown in the table.
(c)[1 mark]Suggest why aluminium is used in aircraft bodies instead of copper.
Question 5
1 mark · Easy
Answer and see the solution →Define the term 'alloy.'
Question 6
3 marks · Easy
Answer and see the solution →Answer the following about metals:
(a)[2 marks]Name two physical properties of copper.
(b)[1 mark]State one use of iron or steel.
Question 7
2 marks · Easy
Answer and see the solution →A pan is made using aluminium because of its low density. The pan has a mass of 540 g and a volume of 200 cm³. Calculate the density of aluminium in g/cm³.
Question 8
2 marks · Easy
Answer and see the solution →A pure metal rod can be bent easily because its layers of atoms can slide. In an alloy rod, a force of 200 N is needed to cause bending, but in the pure metal it requires only 120 N. Calculate how many times harder the alloy rod is to bend compared to the pure metal (give your answer to 1 decimal place).
Question 9
2 marks · Normal
Answer and see the solution →State two reasons why aluminium is widely used for making aircraft bodies.
Question 10
4 marks · Normal
Answer and see the solution →The diagrams below show simplified structures of a pure metal and an alloy. Study them and answer the questions.
(a)[1 mark]Define the term 'alloy.'
(b)[3 marks]Explain why alloys are usually harder than pure metals. You may use diagrams in your answer.