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
91–100 of 163
Question 91
2 marks · Normal
Answer and see the solution →State two variables, apart from the type of metal, that must be controlled in an experiment comparing how quickly different metals react with dilute acid.
Question 92
4 marks · Normal
Answer and see the solution →A student observes the reaction between four different metals and dilute hydrochloric acid. She records the following results:
Metal Observation Calcium Rapid bubbling; white suspension forms; test-tube gets hot Iron Slow fizzing; pale green solution; little heat noticed Zinc Steady bubbles; colourless solution; test-tube gets warm Gold No reaction; no observable change (a)[2 marks]Which metal, from the table, is the most reactive? Explain your answer.
(b)[2 marks]Explain why gold does not react with dilute hydrochloric acid.
Question 93
2 marks · Hard
Answer and see the solution →A student places strips of magnesium and iron into separate test tubes containing excess dilute hydrochloric acid at room temperature. Only one test tube becomes noticeably warm and gives off gas rapidly.
State which metal is more reactive and explain your reasoning using the observations.
Question 94
5 marks · Hard
Answer and see the solution →A student investigates how sodium, magnesium, zinc, and silver react with dilute hydrochloric acid. She records her results in the table below:
Experimental results for reactions with dilute hydrochloric acid. Metal Observation Sodium Rapid fizzing, heat produced, gas collected, test tube very hot. Magnesium Vigorous fizzing, solution gets warm, gas collected. Zinc Steady fizzing, slight warmth, some gas collected. Silver No visible change. (a)[1 mark]Rank the four metals in order of reactivity with dilute hydrochloric acid, starting with the most reactive.
(b)[2 marks]Explain how the student’s observations support the order of reactivity you have given. Refer to at least two different metals in your explanation.
(c)[2 marks]State one reason why it is important to use the same number of moles of each metal when comparing their reactivity in this experiment.
Question 95
2 marks · Hard
Answer and see the solution →A student reacts equal moles of aluminium and iron separately with excess dilute hydrochloric acid at room temperature. The aluminium sample shows little to no fizzing at first but then reacts quickly when warmed. The iron sample reacts slowly, producing gentle fizzing throughout.
Use the observations to explain which metal is more reactive with dilute hydrochloric acid, and give a reason for aluminium’s unusual reaction pattern.
Question 96
1 mark · Easy
Answer and see the solution →Rubidium is placed above potassium in the reactivity series. Would you expect rubidium to react more or less vigorously with water compared to potassium? State your answer.
Question 97
3 marks · Easy
Answer and see the solution →Calcium, lead and iron are placed in the following order in the reactivity series: calcium > iron > lead.
(a)[1 mark]Which of these three metals would you expect to react most quickly with dilute hydrochloric acid?
(b)[1 mark]Predict which of these metals would not react at all with cold water.
(c)[1 mark]Explain your answer to part b.
Question 98
2 marks · Easy
Answer and see the solution →A lump of nickel is placed in copper(II) sulfate solution. Explain what happens, using the reactivity series.
Question 99
3 marks · Easy
Answer and see the solution →A student investigates the reaction of four metals (A, B, C, D) with dilute hydrochloric acid. The results are given in the table:
Observed reactions with dilute hydrochloric acid. Metal Observation A rapid fizzing B no reaction C slow bubbling D moderate fizzing (a)[1 mark]Arrange the metals in order of decreasing reactivity with dilute hydrochloric acid.
(b)[1 mark]Which metal is most likely copper? Explain your answer.
(c)[1 mark]Suggest a possible identity for the most reactive metal, A.
Question 100
2 marks · Easy
Answer and see the solution →Gallium is a metal that is placed between aluminium and zinc in the reactivity series. Copper is below both aluminium and zinc in the reactivity series.
Predict whether gallium will be able to displace copper from copper(II) sulfate solution. Use the reactivity series to explain your reasoning.
(a)[2 marks]Will gallium displace copper from copper(II) sulfate solution? Explain your answer using the reactivity series.
(b)[0 marks]