Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Inorganic Chemistry
869 practice questions
Topics covered
- The Alkali Metals85 practice questions
- The Halogens86 practice questions
- Gases in the Atmosphere86 practice questions
- Reactivity Series163 practice questions
- Extraction and Uses of Metals128 practice questions
- Acids, Alkalis and Titrations83 practice questions
- Acids, Bases and Salt Preparations156 practice questions
- Chemical Tests68 practice questions
Practice questions
351–360 of 869
Question 351
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 352
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 353
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 354
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 355
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 356
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 357
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]Question 358
1 mark · Easy
Answer and see the solution →A piece of rubidium metal is added to cold water. Predict what will happen. Use the reactivity series in your answer.
Question 359
3 marks · Easy
Answer and see the solution →A new metal, Q, lies between magnesium and zinc in the reactivity series.
(a)[1 mark]Predict whether metal Q will react with cold water. State your reasoning.
(b)[2 marks]Predict whether metal Q will react with dilute hydrochloric acid at room temperature. State your reasoning.
Question 360
2 marks · Easy
Answer and see the solution →When 1.0 g of an unknown metal (X) is added to excess dilute sulfuric acid at room temperature, 0.067 g of hydrogen gas is released. Given that the metal is above hydrogen in the reactivity series, predict whether magnesium or iron is more likely to be metal X. Show your reasoning.