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
261–270 of 869
Question 261
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 262
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 263
1 mark · Easy
Answer and see the solution →Which metal in the following list is the least reactive: aluminium, copper, magnesium, iron?
Question 264
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 265
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 266
2 marks · Normal
Answer and see the solution →The diagram below shows four metals (A, B, C, D) and the results of their reactions with the oxides of the others. If a metal reacts with the oxide of another metal, a tick (✓) is shown.
Reaction results for metals A, B, C, and D Reactant Metal Reacts with oxide of A Reacts with oxide of B Reacts with oxide of C Reacts with oxide of D A – ✓ ✓ ✓ B – – ✓ ✓ C – – – ✓ D – – – – Question 267
4 marks · Normal
Answer and see the solution →Read each definition and answer the following:
(a)[2 marks]State what is meant by oxidation and reduction in terms of oxygen.
(b)[2 marks]Define the terms oxidising agent and reducing agent.
Question 268
3 marks · Normal
Answer and see the solution →Zinc oxide can be reduced using carbon:
If you start with 16.2 grams of zinc oxide (ZnO), calculate the maximum mass of zinc metal that can be obtained. (Relative atomic masses: Zn = 65, O = 16, C = 12)
Question 269
3 marks · Normal
Answer and see the solution →Iron(III) oxide reacts with aluminium powder in a competition (thermite) reaction. Aluminium is above iron in the reactivity series.
Explain, in terms of reactivity, why aluminium can remove oxygen from iron(III) oxide but iron cannot remove oxygen from aluminium oxide.
Question 270
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.