Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Reactivity Series
163 practice questions
Topics covered
- Displacement reactions involving metal oxides20 practice questions
- Oxidation and reduction19 practice questions
- Displacement reactions involving solutions of salts19 practice questions
- Reactions of metals with water18 practice questions
- Reactions of metals with dilute acids19 practice questions
- Making predictions using the reactivity series19 practice questions
- Preventing rusting by galvanising21 practice questions
- Preventing rusting by using sacrificial protection18 practice questions
Practice questions
61–66 of 66 · Easy
Question 61
1 mark · Easy
Answer and see the solution →State why a sacrificial anode used to protect iron must be more reactive than iron.
Question 62
3 marks · Easy
Answer and see the solution →Some large steel structures are fitted with blocks of magnesium for protection.
(a)[1 mark]State what these magnesium blocks are called.
(b)[2 marks]Describe how these magnesium blocks help prevent the steel structure from rusting.
Question 63
2 marks · Easy
Answer and see the solution →An iron water tank is protected from rust by a zinc block acting as a sacrificial anode. Over 24 months, the mass of the zinc block decreases from 800 g to 620 g.
Calculate the average mass of zinc lost per month. Show your working.
Question 64
5 marks · Easy
Answer and see the solution →(a)[1 mark]The reactivity series below shows the order of metals from most to least reactive. Potassium, Sodium, Lithium, Calcium, Magnesium, Zinc, Iron, Copper.
Arrange the following three metals in order of reactivity, from most reactive to least reactive: magnesium, copper, iron.
(b)[1 mark]Iron(III) oxide reacts with aluminium powder when heated.
Write a word equation for this reaction.
(c)[2 marks]Explain which substance is oxidised and which substance is reduced in this reaction, in terms of oxygen transfer.
(d)[1 mark]In the reaction above, which metal is displaced from its oxide?
Question 65
5 marks · Easy
Answer and see the solution →(a)[1 mark]State what is meant by a displacement reaction involving a metal oxide.
(b)[2 marks]When carbon is heated with iron(III) oxide, the following reaction occurs:
Identify which substance is reduced in this reaction and explain your answer in terms of oxygen transfer.
(c)[1 mark]Name one use of carbon as a reducing agent in industry.
(d)[1 mark]Explain why carbon cannot be used to extract magnesium from magnesium oxide.
Question 66
5 marks · Easy
Answer and see the solution →A student heats a mixture of powdered aluminium and iron(III) oxide. The following reaction occurs:
(a)[2 marks]Use the reactivity series to explain why this reaction occurs. Identify which metal is displaced and why.
(b)[3 marks]In terms of electron transfer, describe what happens to aluminium and what happens to iron(III) oxide in the reaction above. Use your answer to part (a) to help you.