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
421–430 of 869
Question 421
1 mark · Easy
Answer and see the solution →State one method used to extract iron from its ore.
Question 422
3 marks · Easy
Answer and see the solution →The table gives the order of some metals in the reactivity series and their methods of extraction.
(a)[1 mark]State why gold can be found as a pure metal in the Earth's crust.
(b)[1 mark]Name the method used to extract aluminium from its ore.
(c)[1 mark]Explain why aluminium requires this method.
Question 423
2 marks · Easy
Answer and see the solution →Copper(II) oxide can be reduced by carbon to extract copper metal.
In an experiment, 8.0 g of copper(II) oxide is heated with carbon and produces 6.4 g of copper.
Calculate the mass of oxygen removed from the copper(II) oxide.
Question 424
2 marks · Easy
Answer and see the solution →Explain, using the reactivity series, why silver is sometimes found as a metal in the Earth's crust, but zinc must be extracted from its ore.
Question 425
3 marks · Easy
Answer and see the solution →The table shows three metals, their reactivity, and their extraction methods.
Extraction of metals Metal Position in Reactivity Series Extraction Method Potassium Very reactive ? Zinc Less reactive than carbon Reduction with carbon Silver Least reactive Found native (a)[1 mark]Suggest the method used to extract potassium from its ore.
(b)[1 mark]State the type of compound potassium is usually found in.
(c)[1 mark]Explain why silver can be found as the native metal but zinc cannot.
Question 426
1 mark · Easy
Answer and see the solution →Name one metal that can be found native (as an uncombined element) in the Earth's crust.
Question 427
3 marks · Easy
Answer and see the solution →Lead is less reactive than aluminium but more reactive than silver.
(a)[1 mark]Name one method used to extract lead from its ore.
(b)[2 marks]Would you expect to find lead in the Earth's crust as the metal or as a compound? Give a reason for your answer.
Question 428
2 marks · Easy
Answer and see the solution →A student heats 10.0 g of zinc sulfide (ZnS) strongly in air. The reaction converts all the ZnS into zinc oxide (ZnO) and releases sulfur dioxide gas.
If the mass of zinc oxide produced is 12.0 g, calculate the mass of sulfur dioxide given off.
Question 429
2 marks · Normal
Answer and see the solution →State the meaning of:
(a)[1 mark]An ore.
(b)[1 mark]A native metal.
Question 430
4 marks · Normal
Answer and see the solution →The list shows three metals in order of reactivity:
Gold Iron Aluminium
(a)[1 mark]Which metal is most likely to be found in the Earth's crust as the uncombined element? Explain your answer.
(b)[1 mark]State one common ore of iron.
(c)[1 mark]Describe the method used to extract iron from its ore.
(d)[1 mark]Explain why aluminium must be extracted by a different method than iron.