Group VII properties — Paper 2 · IGCSE Sciences - Co-ordinated (Double) 0654

21 Part of the Periodic Table is shown. X Y W Z Which description is correct? A W is a soft solid at room temperature. It has a low melting point and it can act as a catalyst. B X is a solid at room temperature. It has a high melting point and it can act as a catalyst. C Y is a solid at room temperature. It forms a coloured vapour and it displaces iodide ions. D Z is a gas at room temperature. It is very reactive and it has a low boiling point.

1 marks

Answer: B

This question in 0654/21 May/June 2017

22 Which statement about fluorine and astatine is correct? A Fluorine is a solid and astatine is a gas at room temperature. B Fluorine is darker in colour than astatine. C Fluorine is more reactive than astatine. D The formula of fluorine is F2 and the formula of astatine is At.

1 marks

Answer: C

This question in 0654/22 Oct/Nov 2018

24 Chlorine gas is bubbled through two separate solutions. chlorine chlorine gas gas potassium bromide potassium iodide solution solution What is observed in the two tubes? potassium bromide tube potassium iodide tube A colourless solution turns orange colourless solution turns brown B colourless solution turns orange solution remains colourless C orange solution turns colourless brown solution turns colourless D orange solution turns colourless solution remains brown

1 marks

Answer: A

This question in 0654/21 May/June 2020

21 The properties of the elements in Group VII of the Periodic Table change going down the group. Which change in properties is correct? A They become darker in colour. B They have lower atomic numbers. C They have lower boiling points. D They become more reactive.

1 marks

Answer: A

This question in 0654/22 May/June 2020

22 Astatine is below iodine in Group VII of the Periodic Table. Which statements about astatine are correct? 1 It is monoatomic. 2 It is a solid at room temperature. 3 It is lighter in colour than iodine. 4 It does not react with aqueous potassium iodide. A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4

1 marks

Answer: C

This question in 0654/22 Feb/March 2021

21 Which element has similar chemical properties to chlorine? A argon B bromine C oxygen D sulfur

1 marks

Answer: B

This question in 0654/23 May/June 2021

16 When aqueous chlorine is added to aqueous potassium bromide, bromine is produced. What is the ionic equation for this reaction? A Cl 2 + Br –  2Cl – + Br B Cl 2 + 2Br –  2Cl – + Br2 C Cl 2 + 2Br –  Cl – + Br2 D Cl 2 + 2KBr  2KCl + Br2

1 marks

Answer: B

This question in 0654/22 Oct/Nov 2021

17 The diagram shows the electrolysis of a compound. switch + – P Q electrolyte When the switch is closed, the solution around electrode P turns orange because a halogen is formed. The positive electrode P is called the ……1……, and the halogen is ……2…… . Which words complete gaps 1 and 2? 1 2 A anode bromine B anode chlorine C cathode bromine D cathode chlorine

1 marks

Answer: A

This question in 0654/22 Oct/Nov 2021

21 Which statement about the elements in Group I and in Group VII of the Periodic Table is correct? A Chlorine has a darker colour than iodine. B Each molecule of a halogen contains one atom. C Potassium reacts with cold water more vigorously than lithium. D The melting point of lithium is lower than the melting point of sodium.

1 marks

Answer: C

This question in 0654/23 Oct/Nov 2021

19 Which substance changes the colour of damp red litmus? A CO2 B Cl 2 C H2 D SO2

1 marks

Answer: B

This question in 0654/23 May/June 2022

21 Which statement about the halogens is not correct? A Iodine has a darker colour than chlorine. B They all exist as diatomic molecules. C They are all gases at room temperature. D They are all non-metals.

1 marks

Answer: C

This question in 0654/21 Oct/Nov 2022

21 Which statements about the elements in Group VII of the Periodic Table are correct? 1 Only one of them is a liquid at room temperature. 2 Their colours become darker down the group. 3 Their melting points and boiling points decrease down the group. 4 They are all metallic elements called halogens. A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: A

This question in 0654/22 Oct/Nov 2022

21 Which statements about the halogens are correct? 1 They are diatomic metals. 2 Their atoms have seven outer-shell electrons. 3 Going down the group, they change from solid to liquid to gas. 4 Going down the group, they become darker in colour. A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4

1 marks

Answer: C

This question in 0654/22 Oct/Nov 2023

21 Which statements about the elements in Group VII of the Periodic Table are correct? 1 Bromine is lighter in colour than chlorine. 2 Chlorine is more reactive than bromine. 3 Chlorine displaces iodide ions from aqueous solution. 4 Iodine displaces bromide ions from aqueous solution. A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: C

This question in 0654/23 May/June 2024

23 Tennessine is a newly discovered halogen and is below astatine in Group VII of the Periodic Table. Which row predicts the appearance of tennessine and the effect of adding aqueous potassium iodide? effect of adding aqueous appearance of potassium iodide tennessine to tennessine A black solid iodine is formed B black solid no reaction C brown liquid iodine is formed D brown liquid no reaction

1 marks

Answer: B

This question in 0654/21 Oct/Nov 2024

22 Which statement about the halogens is not correct? A Bromine is darker in colour than iodine. B Iodine is solid at room temperature. C They all have seven electrons in their outer shell. D They all form diatomic molecules.

1 marks

Answer: A

This question in 0654/23 Oct/Nov 2024

21 Bromine has a boiling point of 59 °C. It reacts with hydrogen rapidly. Iodine has a boiling point of 184 °C. It reacts with hydrogen slowly. Which row about fluorine is correct? boiling point reaction with / °C hydrogen A –188 explosive B –188 very slow C 114 explosive D 114 very slow

1 marks

Answer: A

This question in 0654/22 Feb/March 2025

20 Part of the Periodic Table is shown. X Y W Z Which description is correct? A W is a soft solid at room temperature. It has a low melting point and it can act as a catalyst. B X is a solid at room temperature. It has a high melting point and it can act as a catalyst. C Y is a solid at room temperature. It forms a coloured vapour and it displaces iodide ions. D Z is a gas at room temperature. It is very reactive and it has a low boiling point.

1 marks

Answer: B

This question in 0654/22 May/June 2025

21 Which statement about the elements in Group VII of the Periodic Table is correct? A Chlorine is more reactive than bromine. B The colour of the elements becomes darker up the group. C The melting point of the elements decreases down the group. D The reactivity of the elements increases down the group.

1 marks

Answer: A

This question in 0654/21 Oct/Nov 2025