plumiIons and ionic bonds: CAIE IGCSE Chemistry questions
Every CAIE IGCSE Chemistry exam question on 2.4 Ions and ionic bonds, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Calculations
Q1(a)(ii)
The whole paper ↗![June 2024 Paper 3, question 1(a)(ii): a substance that only conducts electricity when molten or in aqueous solution [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062031-jun24-01-aii-qp.webp)
Q1(a)(v)
The whole paper ↗![June 2024 Paper 3, question 1(a)(v): a compound with a high melting point [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062031-jun24-01-av-qp.webp)
Q3(b)(iv)
The whole paper ↗![June 2024 Paper 4, question 3(b)(iv): Explain in terms of structure and bonding why sodium fluoride has a much higher melting point than fluorine. [3]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062041-jun24-03-biv-qp.webp)
Q1(a)(iv)
The whole paper ↗![Specimen Paper 3, question 1(a)(iv): forms a stable ion with a single negative charge. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-01-aiv-qp.webp)
Q2(a)(ii)
The whole paper ↗![Specimen Paper 3, question 2(a)(ii): Identify the positive ion present in the highest concentration in the 100 cm3 sample of milk. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-02-aii-qp.webp)
Q2(a)(iii)
The whole paper ↗![Specimen Paper 3, question 2(a)(iii): Complete Fig. 2.1 to show the electronic configuration of a potassium ion. + K Fig. 2.1 [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-02-aiii-qp.webp)
Q5(c)(i)
The whole paper ↗![Specimen Paper 3, question 5(c)(i): State the meaning of the term ionic bonding. [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-05-ci-qp.webp)
Q5(c)(ii)
The whole paper ↗![Specimen Paper 3, question 5(c)(ii): Identify which information in Table 5.1 shows that potassium bromide is an ionic compound. [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-05-cii-qp.webp)
Q2(d)(i)
The whole paper ↗![Specimen Paper 4, question 2(d)(i): Complete the dot-and-cross diagram in Fig. 2.1 of the ions in magnesium chloride. Show the charges on the ions. Cl Mg Cl Fig. 2.1 [3]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062004-spec-02-di-qp.webp)
Q2(d)(ii)
The whole paper ↗
All 15 questions on Ions and ionic bonds, as a list
- June 2024, Paper 1, Q4 (1 mark): Some properties of substances W, X, Y and Z are shown. melting point/ °C electrical conductivity W 801 conducts when molten X –182 does not conduct Y 840 conduc
- June 2024, Paper 1, Q5 (1 mark): Atoms lose or gain electrons to become ions. Which row is correct? change to the atom type of ion charge on ion A loss of two electrons cation 2– B loss of one
- June 2024, Paper 2, Q7 (1 mark): Which statements about potassium chloride are correct? 1 It conducts electricity when solid because its ions are free to move. 2 It has a high melting point bec
- June 2024, Paper 3, Q1(a)(ii) (1 mark): a substance that only conducts electricity when molten or in aqueous solution [1]
- June 2024, Paper 3, Q1(a)(v) (1 mark): a compound with a high melting point [1]
- June 2024, Paper 4, Q3(b)(iv) (3 marks): Explain in terms of structure and bonding why sodium fluoride has a much higher melting point than fluorine. [3]
- Specimen, Paper 1, Q4 (1 mark): Which statement describes the bonding in sodium chloride? A A shared pair of electrons between two atoms leading to a noble gas configuration. B A strong force
- Specimen, Paper 2, Q3 (1 mark): Which statement describes the bonding in sodium chloride? A A shared pair of electrons between two atoms leading to a noble gas configuration. B A strong force
- Specimen, Paper 3, Q1(a)(iv) (1 mark): forms a stable ion with a single negative charge. [1]
- Specimen, Paper 3, Q2(a)(ii) (1 mark): Identify the positive ion present in the highest concentration in the 100 cm3 sample of milk. [1]
- Specimen, Paper 3, Q2(a)(iii) (1 mark): Complete Fig. 2.1 to show the electronic configuration of a potassium ion. + K Fig. 2.1 [1]
- Specimen, Paper 3, Q5(c)(i) (2 marks): State the meaning of the term ionic bonding. [2]
- Specimen, Paper 3, Q5(c)(ii) (2 marks): Identify which information in Table 5.1 shows that potassium bromide is an ionic compound. [2]
- Specimen, Paper 4, Q2(d)(i) (3 marks): Complete the dot-and-cross diagram in Fig. 2.1 of the ions in magnesium chloride. Show the charges on the ions. Cl Mg Cl Fig. 2.1 [3]
- Specimen, Paper 4, Q2(d)(ii) (2 marks): One physical property typical of ionic compounds, such as MgCl 2, is that they are soluble in water. Give two other physical properties that are typical of ioni
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