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
31–40 of 374 · Normal
Question 31
2 marks · Normal
Answer and see the solution →Give the formula and name for the hydroxide formed when francium reacts with water.
Question 32
4 marks · Normal
Answer and see the solution →Answer the following questions about francium and its properties.
(a)[2 marks]Explain why we can predict the properties of francium, even though it is extremely rare.
(b)[2 marks]State one property francium would have as a solid and one as an aqueous compound.
Question 33
6 marks · Normal
Answer and see the solution →Rubidium and caesium are Group 1 alkali metals.
(a)[2 marks]State two physical properties that rubidium and caesium have in common with other Group 1 metals.
(b)[2 marks]Describe what you would observe if a small piece of caesium was dropped into water.
(c)[2 marks]Explain, in terms of electronic configuration, why caesium reacts more rapidly with water than sodium.
Question 34
6 marks · Normal
Answer and see the solution →The alkali metals show clear trends down Group 1.
(a)[2 marks]Rubidium and caesium are both placed below potassium in Group 1 of the Periodic Table. Predict how the reactivity of caesium compares to that of rubidium and explain your answer.
(b)[1 mark]Describe how the size of alkali metal atoms changes as you move from lithium to caesium in Group 1.
(c)[2 marks]Explain, in terms of electronic configuration, why alkali metals become more reactive as you move down Group 1.
(d)[1 mark]State the charge on an ion formed when a caesium atom reacts.
Question 35
6 marks · Normal
Answer and see the solution →Rubidium (Rb) and caesium (Cs) are Group 1 alkali metals. Their physical and chemical properties follow group trends seen in other Group 1 metals such as lithium, sodium and potassium.
(a)[2 marks]State two physical properties that rubidium and caesium have in common with lithium, sodium, and potassium.
(b)[1 mark]Rubidium and caesium both react vigorously with water.
Write a balanced chemical equation for the reaction of caesium with water.
(c)[2 marks]Describe what you would observe when a small piece of caesium is added to water. Give two observations.
(d)[1 mark]Explain, in terms of electronic structure, why caesium reacts more violently with water than potassium.
Question 36
2 marks · Normal
Answer and see the solution →State the physical state and colour of chlorine and iodine at room temperature.
Question 37
4 marks · Normal
Answer and see the solution →This question is about the reactivity and displacement reactions of the halogens.
(a)[1 mark]Write a balanced equation for the reaction of chlorine with potassium bromide solution.
(b)[2 marks]Explain why this reaction happens.
(c)[1 mark]Name the type of reaction taking place in part (a).
Question 38
3 marks · Normal
Answer and see the solution →Explain, in terms of group trends, why iodine does not displace chlorine from a solution of sodium chloride. Include reference to reactivity and position in the group.
Question 39
4 marks · Normal
Answer and see the solution →The table below shows the appearance of three halogens at room temperature. Some data is missing. Complete the table.
Appearance of halogens at room temperature Halogen Physical state Colour Chlorine green Bromine red-brown Iodine Write your answers for the missing physical states and colour.
Question 40
1 mark · Normal
Answer and check →Which statement correctly explains why potassium iodide reacts with chlorine water?
- A.Chlorine is less reactive than iodine, so it is displaced by iodine.
- B.Iodine is more reactive than chlorine, so it displaces chlorine from the solution.
- C.Chlorine is more reactive than iodine, so it displaces iodine from potassium iodide.
- D.Iodine forms a stronger bond with potassium, so it replaces chlorine.