Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Displacement reactions involving metal oxides
20 practice questions
Practice questions
1–9 of 9 · Normal
Question 1
2 marks · Normal
Answer and see the solution →The diagram below shows four metals (A, B, C, D) and the results of their reactions with the oxides of the others. If a metal reacts with the oxide of another metal, a tick (✓) is shown.
Reaction results for metals A, B, C, and D Reactant Metal Reacts with oxide of A Reacts with oxide of B Reacts with oxide of C Reacts with oxide of D A – ✓ ✓ ✓ B – – ✓ ✓ C – – – ✓ D – – – – Question 2
4 marks · Normal
Answer and see the solution →Read each definition and answer the following:
(a)[2 marks]State what is meant by oxidation and reduction in terms of oxygen.
(b)[2 marks]Define the terms oxidising agent and reducing agent.
Question 3
3 marks · Normal
Answer and see the solution →Zinc oxide can be reduced using carbon:
If you start with 16.2 grams of zinc oxide (ZnO), calculate the maximum mass of zinc metal that can be obtained. (Relative atomic masses: Zn = 65, O = 16, C = 12)
Question 4
3 marks · Normal
Answer and see the solution →Iron(III) oxide reacts with aluminium powder in a competition (thermite) reaction. Aluminium is above iron in the reactivity series.
Explain, in terms of reactivity, why aluminium can remove oxygen from iron(III) oxide but iron cannot remove oxygen from aluminium oxide.
Question 5
2 marks · Normal
Answer and see the solution →A student carries out experiments to determine the order of reactivity of four metals: potassium, zinc, aluminium, and iron. Write the correct order of these four metals in a reactivity series from most to least reactive.
Question 6
4 marks · Normal
Answer and see the solution →Answer the following about redox reactions and agents.
(a)[1 mark]State what is meant by oxidation.
(b)[1 mark]State what is meant by reduction.
(c)[1 mark]Explain what an oxidising agent does in a reaction.
(d)[1 mark]Give the definition of a reducing agent.
Question 7
3 marks · Normal
Answer and see the solution →Iron(III) oxide can be reduced by aluminium in a displacement reaction:
Calculate the maximum mass of iron produced if 8.0 g of iron(III) oxide is reduced completely using this reaction. (Relative atomic masses: Fe = 56, Al = 27, O = 16)
Question 8
3 marks · Normal
Answer and see the solution →A student claims that aluminium can displace zinc from zinc oxide, but not iron from iron(III) oxide. Explain, based on the reactivity series, whether the student's claim is correct.
Question 9
4 marks · Normal
Answer and see the solution →The table shows the results when three metals are mixed with the oxides of the others and heated.
Mixture Reaction observed? Metal X + oxide of Y Yes Metal Y + oxide of Z No Metal Z + oxide of X No Metal Y + oxide of X No Metal Z + oxide of Y Yes (a)[2 marks]Which metal is the most reactive? Explain your reasoning.
(b)[2 marks]Which metal is the least reactive? Explain your answer.