Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Extraction and Uses of Metals
128 practice questions
Topics covered
- Extracting metals from their ores19 practice questions
- Metals below carbon in the reactivity series19 practice questions
- Metals above carbon in the reactivity series18 practice questions
- Properties and uses of some metals19 practice questions
- Uses of aluminium19 practice questions
- Properties and uses of different kinds of steel20 practice questions
Practice questions
21–30 of 128
Question 21
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the reducing agent used to extract iron from iron(III) oxide in the blast furnace.
(b)[1 mark]Write the chemical formula for iron(III) oxide.
(c)[1 mark]Name the process by which iron(III) oxide is converted to iron during extraction.
Question 22
2 marks · Easy
Answer and see the solution →Calculate the total number of moles of oxygen atoms removed when 1.0 mole of Fe2O3 is reduced using carbon monoxide.
Question 23
2 marks · Easy
Answer and see the solution →Explain, using the reactivity series, why copper can be extracted from copper(II) oxide by heating with carbon but magnesium cannot.
Question 24
3 marks · Easy
Answer and see the solution →The table shows the position of several metals in the reactivity series relative to carbon:
Metal Position in series Potassium above carbon Lead below carbon Iron below carbon Aluminium above carbon (a)[1 mark]Name two metals from the table that can be extracted by heating their oxides with carbon.
(b)[1 mark]Explain why potassium cannot be extracted by reduction with carbon.
(c)[1 mark]Suggest the method used to extract aluminium from aluminium oxide.
Question 25
1 mark · Easy
Answer and see the solution →Give the name of the ore that is a major source of iron.
Question 26
3 marks · Easy
Answer and see the solution →(a)[1 mark]State one economic reason why the extraction of iron using carbon is preferred over electrolysis.
(b)[1 mark]Write the balanced chemical equation for the reduction of iron(III) oxide with carbon.
(c)[1 mark]Identify which substance is reduced in this reaction.
Question 27
2 marks · Easy
Answer and see the solution →Given the equation: \ce{Fe2O3(s) + 3CO(g) -> 2Fe(l) + 3CO2(g)}. Calculate the mass of iron produced when 32.0 g of Fe2O3 reacts completely. (Relative atomic masses: Fe = 56, O = 16)
Question 28
2 marks · Normal
Answer and see the solution →State the process used to extract iron from its oxide and name the main reducing agent in this extraction.
Question 29
4 marks · Normal
Answer and see the solution →(a)[1 mark]Write the balanced chemical equation for the reduction of iron(III) oxide by carbon monoxide.
(b)[1 mark]Name the type of reaction that occurs when iron(III) oxide is reduced to iron.
(c)[2 marks]State why carbon is not used to extract aluminium from its oxide.
Question 30
3 marks · Normal
Answer and see the solution →A sample of iron(III) oxide, Fe2O3, weighing 8.0 g is to be reduced by carbon monoxide according to the balanced equation:
Calculate the maximum mass of iron that can be obtained from the sample. (Relative atomic masses: Fe = 56, O = 16)