Ions and ionic bonds — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

27 The positions of four elements are shown on the outline of part of the Periodic Table. Which element would form an ion with two positive charges? A B C D

1 marks

Answer: B

This question in 0654/11 May/June 2006

27 Substance X is an ionic compound. P Q R unlit bulb lit bulb lit bulb solid X liquid X aqueous X Which diagrams are correct for X? A P and Q only B P and R only C R and Q only D P, Q and R

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2007

27 When element X reacts with element Y, X donates an electron to Y. Which row correctly shows the type of ion that Y forms and how its position in the Periodic Table changes? effect on position of element type of ion Y in Periodic Table A negative moves one place to the right B negative no change C positive moves one place to the right D positive no change

1 marks

Answer: B

This question in 0654/11 May/June 2010

15 When element X reacts with element Y, X donates an electron to Y. Which row correctly shows the type of ion that Y forms and how its position in the Periodic Table changes? effect on position of element type of ion Y in Periodic Table A negative moves one place to the right B negative no change C positive moves one place to the right D positive no change

1 marks

Answer: B

This question in 0654/12 May/June 2010

27 Elements X and Y react together to form a compound. The diagram shows the outer shells of X and Y after reaction. X electron Y electron outer shell of X outer shell of Y after reaction after reaction Which statement is correct? A X is in group VII and has formed the X+ ion. B X is in group VII and has formed the X– ion. C X is in group VIII and has formed the X+ ion. D X is in group VIII and has formed the X– ion.

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2010

25 Elements X and Y react together to form a compound. The diagram shows the outer shells of X and Y after reaction. X electron Y electron outer shell of X outer shell of Y after reaction after reaction Which statement is correct? A X is in group VII and has formed the X+ ion. B X is in group VII and has formed the X– ion. C X is in group VIII and has formed the X+ ion. D X is in group VIII and has formed the X– ion.

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2010

28 Elements X and Y react together to form a compound. The diagram shows the outer shells of X and Y after reaction. X electron Y electron outer shell of X outer shell of Y after reaction after reaction Which statement is correct? A X is in group VII and has formed the X+ ion. B X is in group VII and has formed the X– ion. C X is in group VIII and has formed the X+ ion. D X is in group VIII and has formed the X– ion.

1 marks

Answer: B

This question in 0654/13 Oct/Nov 2010

19 Hydrogen can occur as an atom, an ion and a molecule. Which row represents these particles? atom ion molecule A H H+ H2 B H H2 H+ C H+ H H2 D H2 H+ H

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2013

15 The experiment shown is used to investigate the properties of solid X. lamp solid X heat At first, the lamp does not light. On heating, solid X melts and the lamp lights. What type of substance is X? A a compound of a metal and a non-metal B a compound of two non-metals C a metallic element D a non-metallic element

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2013

18 Hydrogen can occur as an atom, an ion and a molecule. Which row represents these particles? atom ion molecule A H H+ H2 B H H2 H+ C H+ H H2 D H2 H+ H

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2013

17 The experiment shown is used to investigate the properties of solid X. lamp solid X heat At first, the lamp does not light. On heating, solid X melts and the lamp lights. What type of substance is X? A a compound of a metal and a non-metal B a compound of two non-metals C a metallic element D a non-metallic element

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2013

15 Magnesium forms an ionic compound with chlorine. Which row describes how the magnesium ion is formed and the formula of the magnesium ion? formation of formula of the ion the ion A electron gain Mg2+ B electron gain Mg2– C electron loss Mg2+ D electron loss Mg2–

1 marks

Answer: C

This question in 0654/11 May/June 2014

17 Magnesium forms an ionic compound with chlorine. Which row describes how the magnesium ion is formed and the formula of the magnesium ion? formation of formula of the ion the ion A electron gain Mg2+ B electron gain Mg2– C electron loss Mg2+ D electron loss Mg2–

1 marks

Answer: C

This question in 0654/13 May/June 2014

18 Sodium chloride (salt) has an ionic structure. Which compound could be sodium chloride? melting point boiling point electrical conductivity / °C / °C A –114 –85 conducts when dissolved in water B 98 880 conducts when solid C 801 1413 conducts when dissolved in water D 1610 2230 conducts when solid

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2014

17 Sodium chloride (salt) has an ionic structure. Which compound could be sodium chloride? melting point boiling point electrical conductivity / °C / °C A –114 –85 conducts when dissolved in water B 98 880 conducts when solid C 801 1413 conducts when dissolved in water D 1610 2230 conducts when solid

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2014

19 Some properties of three substances are shown. melting point boiling point electrical conductivity substance / °C / °C when solid W 801 1413 poor X −111 −78 poor Y 1610 2230 good What are W, X and Y? metallic ionic covalent A W Y X B X W Y C Y W X D Y X W

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2014

15 The positions of four elements are shown on the outline of part of the Periodic Table. Which element forms an ion with a charge of 2+? A B C D

1 marks

Answer: B

This question in 0654/11 May/June 2015

15 The positions of four elements are shown on the outline of part of the Periodic Table. Which element forms an ion with a charge of 2+? A B C D

1 marks

Answer: B

This question in 0654/12 May/June 2015

15 The positions of four elements are shown on the outline of part of the Periodic Table. Which element forms an ion with a charge of 2+? A B C D

1 marks

Answer: B

This question in 0654/13 May/June 2015

18 The diagram shows the electrolysis of a dilute solution of copper(II) chloride using inert electrodes. + – dilute copper(II) chloride solution Which row shows the products formed at each electrode and describes the bonding in copper(II) chloride? type of anode cathode bonding A chlorine copper ionic B chlorine hydrogen covalent C oxygen copper ionic D oxygen hydrogen covalent

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2015

15 Hexane is a covalent compound. Sodium phosphate is an ionic compound. Which row describes the properties of hexane and sodium phosphate? hexane sodium phosphate A high electrical conductivity volatile B insoluble in water non-volatile C non-volatile soluble in water D volatile low electrical conductivity in aqueous solution

1 marks

Answer: B

This question in 0654/13 May/June 2016

16 Which diagram represents a fluoride ion? A B + – C D + –

1 marks

Answer: D

This question in 0654/12 May/June 2019

16 Which diagram represents a fluoride ion? A B + – C D + –

1 marks

Answer: D

This question in 0654/13 May/June 2019

16 What happens to a tellurium atom when it forms a tellurium ion, Te2–? A It gains two electrons. B It gains two protons. C It loses two electrons. D It loses two protons.

1 marks

Answer: A

This question in 0654/13 May/June 2020

15 Part of the Periodic Table is shown. The letters are not the symbols of the elements in the Periodic Table. W X Y Z Which statement is not correct? A W and X are metallic elements. B W and Z form an ionic compound. C X and Y form a covalent compound. D Z is a non-metallic element.

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2021

15 Which row describes the physical properties of the named substances? electrical electrical solubility substance conductivity conductivity in water as a solid as a liquid A ammonia low good good B copper chloride high poor good C iron nitrate high good good D potassium chloride low poor poor

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2021

17 Lithium is in Group I and bromine is in Group VII of the Periodic Table. What is the formula of lithium bromide? A LiBr B LiBr2 C Li2Br D Li2Br2

1 marks

Answer: A

This question in 0654/11 May/June 2023

17 The diagram represents an ionic compound formed from three types of atom. key oxygen sodium sulfur What is the chemical formula for this compound? A Na2S4O B NaO4S2 C Na2SO4 D S4O2Na

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2023

16 Which elements react together to form an ionic compound? A carbon and oxygen B nitrogen and hydrogen C potassium and bromine D sodium and lithium

1 marks

Answer: C

This question in 0654/11 May/June 2024

16 Which dot-and-cross diagram represents sodium chloride? A B + – Na Cl 2 Na Cl C D + – – + Na Cl Na Cl

1 marks

Answer: B

This question in 0654/12 Feb/March 2025

17 What happens to a tellurium atom when it forms a tellurium ion, Te2–? A It gains two electrons. B It gains two protons. C It loses two electrons. D It loses two protons.

1 marks

Answer: A

This question in 0654/11 May/June 2025

14 Which row describes particles present in Mg 25 2+? 12 neutrons electrons A 12 10 B 12 12 C 13 12 D 13 10

1 marks

Answer: D

This question in 0654/12 May/June 2025

16 Magnesium forms an ionic compound with chlorine. Which row describes the formation of the magnesium ion and the formula of the magnesium ion? formation of formula of the ion the ion A electron gain Mg2+ B electron gain Mg2– C electron loss Mg2+ D electron loss Mg2–

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2025