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
281–290 of 869
Question 281
2 marks · Easy
Answer and see the solution →Explain in terms of electrons what happens to sodium in the following reaction:
Question 282
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.
Question 283
1 mark · Easy
Answer and see the solution →In a reaction, chlorine gas (Cl_2) acts as an oxidising agent. What does it do in terms of oxygen transfer?
Question 284
3 marks · Easy
Answer and see the solution →The following equation shows a redox reaction: Describe, in terms of electrons, what happens to:
(a)[1 mark]the zinc atoms
(b)[1 mark]the copper ions
(c)[1 mark]State which is oxidised and which is reduced.
Question 285
2 marks · Easy
Answer and see the solution →A student heats 5.0 g of lead in a stream of oxygen and forms 5.4 g of lead(II) oxide, according to the equation:
Calculate the mass of oxygen that has combined with the lead. State, in terms of oxygen transfer, what has happened to the lead.
Question 286
2 marks · Normal
Answer and see the solution →State what happens to a substance during oxidation and what happens to a substance during reduction in terms of oxygen transfer.
Question 287
4 marks · Normal
Answer and see the solution →(a)[2 marks]Copper(II) oxide reacts with hydrogen gas:
Identify the substance that is reduced and the substance that is oxidised in this reaction.
(b)[2 marks]Name the oxidising agent and the reducing agent in this reaction.
Question 288
3 marks · Normal
Answer and see the solution →In a reaction, iron(III) oxide reacts with aluminium powder:
Describe, in terms of electron transfer, what happens to aluminium atoms during this reaction.
Question 289
3 marks · Normal
Answer and see the solution →Explain why magnesium acts as a reducing agent when it is heated with zinc oxide, in terms of oxygen transfer.
Question 290
4 marks · Normal
Answer and see the solution →Substances involved in a reaction. Substance Oxygen gained/lost Sulphur dioxide gains oxygen Oxygen no change Potassium chloride no change Sulphur trioxide formed from SO2 + O2 (a)[2 marks]Which substance in the table is oxidised? Explain your answer.
(b)[2 marks]Identify the oxidising agent in this process. Justify your choice.