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 359 · Easy
Question 111
2 marks · Easy
Answer and see the solution →In a reaction, magnesium metal is heated with iron(III) oxide. Explain, in terms of oxidation and reduction, what happens to the magnesium and to the iron.
Question 112
3 marks · Easy
Answer and see the solution →A student mixes three different metals (M, N, P) with the oxides of each other and heats them. The table shows their observations:
Results of reactions between metals and metal oxides Added metal Metal oxide Reaction observed? (Yes/No) M N oxide Yes M P oxide No N M oxide No N P oxide No P M oxide Yes P N oxide Yes (a)[1 mark]Which metal is the most reactive?
(b)[1 mark]Arrange the metals in order of decreasing reactivity.
(c)[1 mark]Explain your reasoning for this order using the table.
Question 113
1 mark · Easy
Answer and see the solution →Which metal in the following list is the least reactive: aluminium, copper, magnesium, iron?
Question 114
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the meaning of "reduction" in terms of oxygen.
(b)[1 mark]What is a reducing agent?
(c)[1 mark]In the reaction: , identify the oxidising agent.
Question 115
2 marks · Easy
Answer and see the solution →When 0.24 g of magnesium powder is heated with excess copper(II) oxide, a displacement reaction occurs:
Calculate the maximum mass of copper that can be produced. (Ar: Mg = 24, Cu = 64)
Question 116
1 mark · Easy
Answer and see the solution →In the equation below, which species is oxidised? State your answer as the formula.
Question 117
3 marks · Easy
Answer and see the solution →Complete the following sentences about oxidation and reduction in terms of oxygen transfer.
(a)[1 mark]A substance is oxidised if it ___ oxygen.
(b)[1 mark]A substance is reduced if it ___ oxygen.
(c)[1 mark]In the reaction: , name the substance that is reduced.
Question 118
2 marks · Easy
Answer and see the solution →The equation below represents a reaction: \[ 2Ag_2O \rightarrow 4Ag + O_2 \] State the oxidising agent and the reducing agent in this reaction.
(a)[1 mark]Identify the oxidising agent.
(b)[1 mark]Identify the reducing agent.
Question 119
2 marks · Easy
Answer and see the solution →Explain in terms of electrons what happens to sodium in the following reaction:
Question 120
3 marks · Easy
Answer and see the solution →The table shows whether substances gain or lose oxygen in a reaction.
Substance Oxygen gained/lost A gains oxygen B loses oxygen C no change (a)[1 mark]Which substance is being oxidised?
(b)[1 mark]Which substance is being reduced?
(c)[1 mark]State the meaning of oxidation in terms of oxygen transfer.