Group I properties — Paper 1 · IGCSE Chemistry (9-1) 0971

20 The properties of an element are shown. electrical conductivity density reaction with water high low reacts violently with cold water Which element has these properties? A B C D

1 marks

Answer: D

This question in 0971/11 May/June 2019

21 A Group I metal (lithium, sodium or potassium) is reacted with a Group VII element (chlorine, bromine or iodine). Which compound is formed when the Group I metal of highest density reacts with the Group VII element of lowest density? A lithium chloride B potassium chloride C potassium iodide D lithium iodide

1 marks

Answer: B

This question in 0971/11 May/June 2020

23 Which row describes the trend in properties of the elements in Group I as the group is descended? melting reactivity point with water A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: B

This question in 0971/11 May/June 2021

23 Lithium, sodium and potassium are elements in Group I of the Periodic Table. Which statement about these elements is correct? A Lithium has the highest melting point and the lowest density. B Lithium has the highest density and the most violent reaction with water. C Potassium has the highest melting point and the highest density. D Potassium has the lowest melting point and the least violent reaction with water.

1 marks

Answer: A

This question in 0971/11 May/June 2022

24 Lithium, sodium and potassium are elements in Group I of the Periodic Table. Chlorine, bromine and iodine are elements in Group VII of the Periodic Table. Which row identifies the least dense of these elements in each group? Group I Group VII A lithium chlorine B lithium iodine C potassium chlorine D potassium iodine

1 marks

Answer: A

This question in 0971/12 May/June 2022

19 Which row shows the trend in melting point, density and reactivity as Group I is descended? melting point density reactivity A increases decreases decreases B decreases increases increases C increases decreases increases D decreases increases decreases

1 marks

Answer: B

This question in 0971/11 May/June 2023

19 Which statement about alkali metals is correct? A Lithium is more dense than sodium. B Sodium is more reactive than potassium. C Sodium has a higher melting point than potassium. D They are in Group II of the Periodic Table.

1 marks

Answer: C

This question in 0971/12 May/June 2023

21 Some properties of element R are shown. melting point in °C 98 boiling point in °C 883 reaction with cold water gives off H2 gas reaction when heated with oxygen burns to give a white solid In which part of the Periodic Table is R found? A Group I B Group VII C Group VIII D transition elements

1 marks

Answer: A

This question in 0971/12 Oct/Nov 2023

22 Lithium, sodium and potassium are elements in Group I. Statements about these elements are listed. 1 Lithium is more dense than sodium. 2 Sodium is more reactive than potassium. 3 They all conduct electricity at room temperature. 4 They all react with oxygen at room temperature. Which statements are correct? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: D

This question in 0971/12 Oct/Nov 2023

22 The table gives some information about three elements in Group I of the Periodic Table. melting point density element atomic number in °C in g/cm3 lithium 3 181 0.53 sodium 11 98 0.97 rubidium 37 X X Which row identifies the melting point and the density of rubidium? melting point density in °C in g/cm3 A 39 0.38 B 39 1.53 C 253 0.38 D 253 1.53

1 marks

Answer: B

This question in 0971/11 May/June 2024

22 E is an element from Group I of the Periodic Table. Two properties of E are listed. ● It has a higher melting point than caesium. ● It has a lower density than sodium. What is the identity of E? A lithium B potassium C rubidium D francium

1 marks

Answer: A

This question in 0971/11 May/June 2025

22 Which row identifies the trends in properties of the elements lithium to sodium to potassium? melting point density reactivity A decreasing increasing increasing B increasing increasing decreasing C increasing decreasing increasing D decreasing decreasing increasing

1 marks

Answer: A

This question in 0971/12 May/June 2025

23 Which statement describes a general trend down Group I? A The melting point increases. B The reactivity decreases. C The density increases. D The total number of electrons decreases.

1 marks

Answer: C

This question in 0971/12 Oct/Nov 2025