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
111–120 of 374 · Normal
Question 111
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 112
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 113
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 114
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 115
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.
Question 116
2 marks · Normal
Answer and see the solution →State what happens to a substance during oxidation and what happens to a substance during reduction in terms of oxygen transfer.
Question 117
4 marks · Normal
Answer and see the solution →(a)[2 marks]Copper(II) oxide reacts with hydrogen gas:
Identify the substance that is reduced and the substance that is oxidised in this reaction.
(b)[2 marks]Name the oxidising agent and the reducing agent in this reaction.
Question 118
3 marks · Normal
Answer and see the solution →In a reaction, iron(III) oxide reacts with aluminium powder:
Describe, in terms of electron transfer, what happens to aluminium atoms during this reaction.
Question 119
3 marks · Normal
Answer and see the solution →Explain why magnesium acts as a reducing agent when it is heated with zinc oxide, in terms of oxygen transfer.
Question 120
4 marks · Normal
Answer and see the solution →Substances involved in a reaction. Substance Oxygen gained/lost Sulphur dioxide gains oxygen Oxygen no change Potassium chloride no change Sulphur trioxide formed from SO2 + O2 (a)[2 marks]Which substance in the table is oxidised? Explain your answer.
(b)[2 marks]Identify the oxidising agent in this process. Justify your choice.