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
181–190 of 374 · Normal
Question 181
4 marks · Normal
Answer and see the solution →The table shows four metals and how each is extracted from its ore.
Metal Extraction Method Gold Found uncombined Iron Reduction with carbon Aluminium Electrolysis Copper Roasting ore then reduction Use the information in the table to answer the questions.
(a)[1 mark]Which of the four metals is the most reactive? Explain your choice.
(b)[1 mark]Which metal in the table is least likely to be found as an ore? Give a reason.
(c)[2 marks]Suggest why reduction with carbon is suitable for some but not all metals.
Question 182
1 mark · Normal
Answer and check →Which statement correctly explains why aluminium is extracted from its ore by electrolysis?
- A.Aluminium is less reactive than carbon.
- B.Aluminium is more reactive than carbon.
- C.Aluminium is found native in the Earth's crust.
- D.Aluminium reacts with oxygen to form an oxide.
Question 183
2 marks · Normal
Answer and see the solution →State two differences between extracting iron and extracting gold from the Earth's crust.
Question 184
4 marks · Normal
Answer and see the solution →Lead is less reactive than carbon but more reactive than silver.
a) Would you expect to find lead in the Earth's crust as the metal or as a compound? Explain your answer.
b) Name the method used to extract lead from its ore.
c) Silver is sometimes found native. State a reason, linked to its position in the reactivity series.
d) Name one property of lead that makes it useful for car batteries.
(a)[1 mark](b)[1 mark](c)[1 mark](d)[1 mark]Question 185
3 marks · Normal
Answer and see the solution →The diagram below shows a section of the reactivity series for four metals, with their possible methods of extraction:
Metal Part of Reactivity Series (Rank: 1 = most reactive) Method used to extract from ore Potassium 1 Magnesium 3 Zinc 6 Silver 10 Metals above carbon in the reactivity series are usually extracted by electrolysis, metals below carbon but above hydrogen can be extracted by reduction with carbon, and very unreactive metals may be found as the element.
Complete the table by writing the likely method of extraction for each metal. Choose from: electrolysis, reduction with carbon, or found native.
Write your answers clearly in your answer booklet in the same order as the metals listed.
Question 186
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 187
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 188
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)
Question 189
3 marks · Normal
Answer and see the solution →Explain why metals below carbon in the reactivity series, such as zinc and iron, are extracted by reduction with carbon, but metals above carbon are not.
Question 190
4 marks · Normal
Answer and see the solution →The table shows some metals and their relative position in the reactivity series.
Part of the reactivity series Metal Position (1 = most reactive) Potassium 1 Zinc 6 Iron 7 Copper 10 (a)[2 marks]Identify which of these metals can be extracted from its oxide using carbon.
(b)[2 marks]Give a reason for your answer.