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
131–140 of 374 · Normal
Question 131
4 marks · Normal
Answer and see the solution →When manganese metal is placed in a solution of iron(II) sulfate, a displacement reaction occurs.
(a)[1 mark]State the oxidising agent in this reaction.
(b)[1 mark]State the reducing agent in this reaction.
(c)[2 marks]Explain why manganese is the reducing agent in terms of electron transfer.
Question 132
2 marks · Normal
Answer and see the solution →State the general word equations for:
(a)[1 mark]the reaction of a metal with cold water,
(b)[1 mark]the reaction of a metal with steam.
Question 133
4 marks · Normal
Answer and see the solution →Potassium, sodium, lithium, and calcium all react with cold water, but in different ways.
(a)[2 marks]Describe two observations you would make when potassium is added to cold water.
(b)[2 marks]Explain what happens to calcium granules when they are added to cold water.
Question 134
3 marks · Normal
Answer and see the solution →Explain, using the reactivity series, why copper is suitable for use in water pipes but zinc is not.
Question 135
4 marks · Normal
Answer and see the solution →The following table lists four metals and the conditions under which they react with water:
Metals, type of water present, and observed reaction. Metal Condition Observation Sodium cold water Magnesium cold water Magnesium steam Copper steam Complete the table with the observations you would expect for each case.
Question 136
1 mark · Normal
Answer and check →Which observation is typical when lithium is added to cold water?
- A.A lilac flame appears above the water.
- B.The metal floats, fizzes, and moves slowly on the surface.
- C.The water becomes orange and the metal disappears with no gas.
- D.A yellow solid is immediately formed in the water.
Question 137
2 marks · Normal
Answer and see the solution →Name the solid products formed when:
(a)[1 mark]zinc reacts with steam,
(b)[1 mark]iron reacts with steam.
Question 138
4 marks · Normal
Answer and see the solution →Some metals do not react with water or steam.
(a)[2 marks]State whether aluminium reacts with steam and explain your answer with reference to its oxide layer.
(b)[2 marks]Explain why copper does not react with cold water or steam.
Question 139
3 marks · Normal
Answer and see the solution →When 7.2 grams of magnesium ribbon are heated in steam, magnesium oxide and hydrogen gas are produced. The equation for the reaction is:
Calculate the volume (in dm) of hydrogen gas produced at room temperature and pressure (RTP) from this reaction. (Molar mass of Mg = 24 g/mol; the molar volume of a gas at RTP = 24 dm/mol)
Question 140
2 marks · Normal
Answer and see the solution →Describe two observations you could make when magnesium is added to dilute hydrochloric acid that show it is more reactive than iron.