Revision NotesExam QuestionsFlashcards
IBChemistrySLExam QuestionsModels of Bonding & StructureThe Ionic Model

Syllabus Edition

First teaching 2023

First exams 2025

|

The Ionic Model (SL IB Chemistry)

Exam Questions

2 hours22 questions

Select a question set to download for
The Ionic Model

Select an answer set to view for
The Ionic Model

Easy
Medium
Hard
11 mark

Which of the following statements about ions and ionic compounds are true? 

  1.   Nitrogen can form a 3- ion
  2.   Potassium can form a cation
  3.   The formula for aluminium chloride is AlCl2

  • I and II only

  • I and III only

  • II and III only 

  • I, II and III

Choose your answer

Did this page help you?

21 mark

What is the correct formula for ammonium carbonate?

  • NH3CO3

  • NH4CO3

  • (NH4)2CO3

  • (NH4)3CO3

Choose your answer

Did this page help you?

31 mark

Which crystal structure does not conduct electricity when solid, has a high melting point and can conduct electricity when molten?

  • Giant metallic

  • Giant ionic

  • Macromolecular

  • Simple molecular

Choose your answer

Did this page help you?

41 mark

Which of the following compounds is not bonded ionically?

  • CaCO3

  • CH3OH

  • NaOH

  • BaCl2

Choose your answer

Did this page help you?

51 mark

Magnesium oxide has a very high melting temperature.

Which of the following is the best description of its structure and bonding?

  • Giant ionic

  • Giant metallic

  • Macromolecular 

  • Simple molecular 

Choose your answer

Did this page help you?

11 mark

Which of the following compounds has both covalent and ionic bonds?

  • calcium bromide, CaBr2

  • potassium carbonate, K2CO3

  • propanoic acid, CH3CH2COOH

  • dichloromethane, CH2Cl2

Choose your answer

Did this page help you?

21 mark

Which is the best description of ionic bonding?

  • electrostatic attraction between cations and electrons

  • electrostatic attraction between nuclei

  • electrostatic attraction between oppositely charged ions

  • electrostatic attraction of nuclei towards shared electrons in the bond between the nuclei

Choose your answer

Did this page help you?

31 mark

 Potassium bromide is an ionic compound. 

When can potassium bromide conduct electricity?

 

Solid

Molten

Aqueous

A

✓

✓

⨯

B

✓

⨯

✓

C

⨯

✓

✓

D

⨯

⨯

✓

    Choose your answer

    Did this page help you?

    41 mark

    Aluminium iodide, Al2I6 is a dimer and exists as a solid at room temperature. When it is a vapour it can exist as an AlI3 molecule. 

    How many valence electrons are in an aluminium iodide, AlI3, molecule?

    • 22

    • 24

    • 26

    • 28

    Choose your answer

    Did this page help you?

    51 mark

    Which of the following substances has the highest melting point?

    • Mg

    • NaO

    • O2

    • C (graphite)

    Choose your answer

    Did this page help you?

    11 mark

    What are the correct formulas for the following ions? 

     

    Phosphate

    Ammonium

    Ethanoate

    Nitrite

    A

    PO43-

    NH4+

    CH3COO+

    NO3-

    B

    PO32-

    NH4-

    CH3COO-

    NO2-

    C

    PO43-

    NH4+

    CH3COO-

    NO2-

    D

    PO42-

    NH4+

    CH3CH2COO-

    NO3-

      Choose your answer

      Did this page help you?

      21 mark

      Of the four compounds listed below which one has the greatest ionic character?

      • HCl

      • MgS

      • CO2

      • CaO

      Choose your answer

      Did this page help you?

      31 mark

      What is the correct formula for aluminium sulfate?

      • Al3(SO4)2

      • Al(SO4)2

      • Al2(SO4)3

      • AlSO4

      Choose your answer

      Did this page help you?