IB Diploma · Chemistry · Chapter 6

Ch 6 S2.1 The ionic model: complete notes

Neat, exam-ready notebook-style notes for Ch 6 S2.1 The ionic model, following the IB Diploma syllabus, SL and HL. This chapter is part of the complete Chemistry Notes for IB Diploma Students (SL and HL): All 23 Topics.

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Free preview: Ch 6 S2.1 The ionic model notes

A quick look at the chapter from our IB Diploma Chemistry notes. The full chapter notes have the detailed explanations, diagrams and practice questions with answers.

Topics in this chapter

1. What you must be able to do
2. Cations, anions and their charges
3. Transition elements form ions of different charges
4. The ionic bond, formulae and names
5. Polyatomic ions to know by name and formula
6. Naming rules
7. The 3-D lattice
8. Reading the ratio
9. What controls lattice enthalpy
10. Explaining the properties

“I can” checklist: what you must be able to do

• I can predict the charge of a main-group ion from the electron configuration of its atom.
• I can write the ions of a transition element with more than one charge, and their configurations.
• I can write formulae of ionic compounds, including with the seven polyatomic ions, and name them (with Roman numerals where needed).
• I can describe the ionic bond and the 3-D lattice and say why the formula is empirical.
• I can explain volatility, conductivity, solubility and brittleness.
• I can explain differences in lattice enthalpy using charge and radius.

What is inside the full chapter notes

• Concept notes with 8 worked examples
• Names and formulae; the polyatomic ion table
• Lattice enthalpy and a data-analysis graph
• Common mistakes; investigation (IA) ideas
• 15 Paper 1A-style MCQs, explained
• 3 Paper 2-style questions and 1 Paper 1B-style data question, with mark schemes
• Quick-reference sheet and "I can" checklist

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What you get in the pack

• All 23 topics of IB Diploma Chemistry for students taking Standard Level or Higher Level (first assessment 2025): the particulate nature of matter, the nuclear atom, electron configurations, the mole, ideal gases, ionic, covalent and metallic bonding, materials and polymers, the periodic table, functional groups, enthalpy changes, energy cycles, fuels, entropy and spontaneity, the amount of chemical change, rate of reaction, equilibrium, acids and bases, redox and electrochemistry, radical reactions, nucleophilic and electrophilic mechanisms
• Every syllabus statement covered in order, each marked SL or HL, with clear notes, tables and diagrams drawn for these notes
• Worked examples in every topic: calculations and model answers that show how to earn the marks
• Original Paper 1A-style multiple-choice questions with explained answers, plus Paper 2-style structured and data-based questions with full mark schemes (no past-paper reprints)
• Common mistakes and investigation (internal assessment) ideas for every topic
• Quick-reference sheet and an "I can" checklist at the end of every topic
• Colour PDF and a black and white copy of every chapter for printing
• Independent notes for IB Diploma students; not endorsed by or affiliated with the International Baccalaureate Organization (IBO)

All chapters in this pack

1. Ch 1 S1.1 Introduction to the particulate nature of matter
2. Ch 2 S1.2 The nuclear atom
3. Ch 3 S1.3 Electron configurations
4. Ch 4 S1.4 Counting particles by mass: the mole
5. Ch 5 S1.5 Ideal gases
6. Ch 6 S2.1 The ionic model
7. Ch 7 S2.2 The covalent model (2.2.1-2.2.7)
8. Ch 8 S2.2 The covalent model (2.2.8-2.2.16)
9. Ch 9 S2.3 The metallic model
10. Ch 10 S2.4 From models to materials
11. Ch 11 S3.1 The periodic table
12. Ch 12 S3.2 Functional groups
13. Ch 13 R1.1 Measuring enthalpy changes
14. Ch 14 R1.2 Energy cycles in reactions
15. Ch 15 R1.3 Energy from fuels
16. Ch 16 R1.4 Entropy and spontaneity (HL)
17. Ch 17 R2.1 How much? The amount of chemical change
18. Ch 18 R2.2 How fast? The rate of chemical change
19. Ch 19 R2.3 How far? The extent of chemical change
20. Ch 20 R3.1 Proton transfer reactions
21. Ch 21 R3.2 Electron transfer reactions
22. Ch 22 R3.3 Electron sharing reactions
23. Ch 23 R3.4 Electron-pair sharing reactions