About Course

MYP Chemistry 4–5 takes a student through the last two years of the Middle Years Programme in Chemistry and into the on-screen eAssessment — taught the way a good chemistry teacher teaches: a puzzle first, an experiment you run yourself, the explanation with worked examples, the story of how scientists worked it out, where it is used today and where it is heading, and questions whose answers you reveal only after you have tried.

What is in every lesson

You met this before — the Year 1–3 ideas the lesson needs, recapped, with a link to the full earlier lesson.
A virtual experiment in StadiraLab, run as a full investigation: research question, hypothesis, variables, three trials, a graph, a conclusion and an evaluation.
Study smart — what to learn by heart, what to practise, the mistakes examiners report every session, and a real past-paper question on the same content.
Check yourself questions inside the notes, eight exam-style questions with marks and model answers, including two stretch questions harder than the real exam.

Assessment

Each lesson has a short quiz, and every unit ends with a 2-hour exam in the eAssessment format: Criterion A (25 marks), an investigation for Criteria B and C (50 marks) and a real-world Criterion D task (25 marks), with a full mark scheme, level grids and notes on what examiners look for.

Units

Periodic trends
Stoichiometry: the mole
Gas laws
Redox reactions
Food chemistry
Chemical nomenclature
Bonding and structure
Thermochemistry
Kinetics and equilibrium
Organic chemistry
Earth resources and the atmosphere
eAssessment bridge: papers, markschemes and timing

All 12 units now live — each with 3D animated diagrams, virtual experiments and a 2-hour exam.

Course Content

Unit 1 · Periodic trends
Electron arrangement and the modern table; trends across a period; Groups 1 and 2; Groups 7 and 0; transition metals and critical raw materials. Ends with a 2-hour eAssessment-style exam.

Start here: your plan, diagnostic and Daily 10
1.1 The modern periodic table: electron arrangement, valency and the map that predicts
1.1 Check yourself — The modern periodic table and electron arrangement
1.2 Trends across a period: shrinking atoms, tighter electrons and oxides that change sides
1.2 Check yourself — Trends across a period
1.3 Group 1 and Group 2: reactivity that grows down the group, and why
1.3 Check yourself — Group 1 and Group 2
1.4 Group 7 and Group 0: halogens that fight for electrons, and noble gases that need none
1.4 Check yourself — Group 7 and Group 0
1.5 Transition metals and the table at work: coloured, catalytic, alloyed and critical
1.5 Check yourself — Transition metals and the table at work
Unit 1 Exam — 2 hours (eAssessment style)

Unit 2 · Stoichiometry: the mole
The mole and the Avogadro constant; reacting masses, limiting reactants and yield; empirical and molecular formulas; molar gas volume; concentration, titration and atom economy. Ends with a 2-hour eAssessment-style exam.

Unit 3 · Gas laws
Kinetic theory and the Kelvin scale; Boyle law; Charles law and the pressure law; the ideal gas equation; gases at work. Ends with a 2-hour eAssessment-style exam.

Unit 4 · Redox reactions
Oxidation and reduction; The reactivity series; Extracting metals; Electrolysis of solutions; Corrosion and cells. Ends with a 2-hour eAssessment-style exam.

Unit 5 · Food chemistry
The molecules of food; Energy in food; Cooking chemistry; Preserving and protecting food; Food, culture and the future. Ends with a 2-hour eAssessment-style exam.

Unit 6 · Chemical nomenclature
Naming ionic compounds; Polyatomic ions; Covalent compounds and acids; Organic names; Functional groups. Ends with a 2-hour eAssessment-style exam.

Unit 7 · Bonding and structure
Ionic bonding; Covalent bonding; Shapes, polarity and the forces between molecules; Giant and simple structures; Carbon allotropes, nanomaterials and alloys. Ends with a 2-hour eAssessment-style exam.

Unit 8 · Thermochemistry
Energy in and out; Measuring heat; Enthalpy change per mole; Bond breaking and bond making; Fuels and the environment. Ends with a 2-hour eAssessment-style exam.

Unit 9 · Kinetics and equilibrium
Collision theory; Measuring rate; Activation energy and catalysts; Reversible reactions, dynamic equilibrium and Le Chatelier principle; The Haber and Contact processes. Ends with a 2-hour eAssessment-style exam.

Unit 10 · Organic chemistry
Carbon families and crude oil; Alkanes at work; Alkenes; Polymers; Alcohols, carboxylic acids and esters. Ends with a 2-hour eAssessment-style exam.

Unit 11 · Earth resources and the atmosphere
Pure substances, mixtures and formulations; Distillation; Chromatography; Potable water, waste water and life-cycle assessment; The atmosphere. Ends with a 2-hour eAssessment-style exam.

Unit 12 · eAssessment bridge
How the on-screen exam works; Criterion A across the whole course; Criteria B and C; Criterion D; The final weeks. Ends with a full 2-hour mock eAssessment.

12.1 How the on-screen exam works: three tasks, the tools, the clock and the command terms
12.1 Check yourself — How the on-screen exam works
12.2 Criterion A across the whole course: a topic-by-topic checklist with retrieval
12.2 Check yourself — The Criterion A checklist
12.3 Criteria B and C: designing investigations and processing data to full marks
12.3 Check yourself — Designing and processing
12.4 Criterion D: discuss and evaluate, built step by step for Globalization and sustainability
12.4 Check yourself — Discuss and evaluate
12.5 The final weeks: a revision timetable, past papers, the exam-day routine and Find the gap
12.5 Check yourself — The final weeks
Unit 12 Full mock eAssessment — 2 hours
Unit 12 Full mock 2 — eAssessment style, 2 hours
Unit 12 Full mock 3 — eAssessment style, 2 hours
Unit 12 Full mock 4 — eAssessment style, 2 hours
Unit 12 Full mock 5 — eAssessment style, 2 hours
Unit 12 Full mock 6 — eAssessment style, 2 hours
Criterion D practice 1 — on screen, 40 minutes
Criterion D practice 2 — on screen, 40 minutes
Criterion D practice 3 — on screen, 40 minutes
IB past paper May 2021 — on screen, 2 hours
IB past paper May 2023 — on screen, 2 hours
IB past paper May 2024 — on screen, 2 hours
IB past paper May 2025 — on screen, 2 hours
IB past paper November 2021 — on screen, 2 hours
IB past paper November 2022 — on screen, 2 hours
IB past paper November 2023 — on screen, 2 hours
IB past paper November 2024 — on screen, 2 hours
IB Integrated Sciences past paper May 2021 — on screen, 2 hours
IB Integrated Sciences past paper May 2022 — on screen, 2 hours
IB Integrated Sciences past paper May 2023 — on screen, 2 hours
IB Integrated Sciences past paper May 2024 — on screen, 2 hours
IB Integrated Sciences past paper May 2025 — on screen, 2 hours
IB Integrated Sciences past paper November 2021 — on screen, 2 hours
IB Integrated Sciences past paper November 2022 — on screen, 2 hours
IB Integrated Sciences past paper November 2024 — on screen, 2 hours

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MYP Chemistry 4–5

About Course

What is in every lesson

Assessment

Units

Course Content

Unit 1 · Periodic trends Electron arrangement and the modern table; trends across a period; Groups 1 and 2; Groups 7 and 0; transition metals and critical raw materials. Ends with a 2-hour eAssessment-style exam.

Start here: your plan, diagnostic and Daily 10

1.1 The modern periodic table: electron arrangement, valency and the map that predicts

1.1 Check yourself — The modern periodic table and electron arrangement

1.2 Trends across a period: shrinking atoms, tighter electrons and oxides that change sides

1.2 Check yourself — Trends across a period

1.3 Group 1 and Group 2: reactivity that grows down the group, and why

1.3 Check yourself — Group 1 and Group 2

1.4 Group 7 and Group 0: halogens that fight for electrons, and noble gases that need none

1.4 Check yourself — Group 7 and Group 0

1.5 Transition metals and the table at work: coloured, catalytic, alloyed and critical

1.5 Check yourself — Transition metals and the table at work

Unit 1 Exam — 2 hours (eAssessment style)

Unit 2 · Stoichiometry: the mole The mole and the Avogadro constant; reacting masses, limiting reactants and yield; empirical and molecular formulas; molar gas volume; concentration, titration and atom economy. Ends with a 2-hour eAssessment-style exam.

2.1 Counting by weighing: the mole, the Avogadro constant and relative mass

2.1 Check yourself — Counting by weighing: the mole

2.2 Moles in reactions: mole ratios, reacting masses, the limiting reactant and percentage yield

2.2 Check yourself — Moles in reactions

2.3 Formulas from experiment: percentage composition, empirical formula and molecular formula

2.3 Check yourself — Formulas from experiment

2.4 Gases and moles: the molar gas volume, gas calculations and collecting a gas

2.4 Check yourself — Gases and moles

2.5 Concentration and chemistry at scale: mol per cubic decimetre, dilution, titration and atom economy

2.5 Check yourself — Concentration and chemistry at scale

Unit 2 Exam — 2 hours (eAssessment style)

Unit 3 · Gas laws Kinetic theory and the Kelvin scale; Boyle law; Charles law and the pressure law; the ideal gas equation; gases at work. Ends with a 2-hour eAssessment-style exam.

3.1 Gases and the kinetic theory: collisions, pressure and the kelvin scale

3.1 Check yourself — Gases and the kinetic theory

3.2 Boyle law: pressure and volume of a gas at constant temperature

3.2 Check yourself — Boyle law

3.3 Charles law and the pressure law: gases, temperature and the road to absolute zero

3.3 Check yourself — Charles law and the pressure law

3.4 The combined and ideal gas equations: pV = nRT and the molar mass of a gas

3.4 Check yourself — The combined and ideal gas equations

3.5 Gases at work: tyres, balloons, divers, aerosols, airbags and the hydrogen tank

3.5 Check yourself — Gases at work

Unit 3 Exam — 2 hours (eAssessment style)

Unit 4 · Redox reactions Oxidation and reduction; The reactivity series; Extracting metals; Electrolysis of solutions; Corrosion and cells. Ends with a 2-hour eAssessment-style exam.

4.1 Oxidation and reduction: oxygen, electrons and oxidation states

4.1 Check yourself — Oxidation and reduction

4.2 The reactivity series: displacement and the competition for electrons

4.2 Check yourself — The reactivity series and displacement

4.3 Extracting metals: carbon, electrolysis and the ores beneath our feet

4.3 Check yourself — Extracting metals

4.4 Electrolysis of solutions: purifying copper and plating metals

4.4 Check yourself — Electrolysis of solutions

4.5 Corrosion and cells: rusting, sacrificial protection and batteries

4.5 Check yourself — Corrosion and cells

Unit 4 Exam — 2 hours (eAssessment style)

Unit 5 · Food chemistry The molecules of food; Energy in food; Cooking chemistry; Preserving and protecting food; Food, culture and the future. Ends with a 2-hour eAssessment-style exam.

5.1 The molecules of food: carbohydrates, fats, proteins and the enzymes that break them

5.1 Check yourself — The molecules of food

5.2 Energy in food: burning a peanut, kilojoules per gram and the food label

5.2 Check yourself — Energy in food

5.3 Cooking chemistry: denaturation, browning, colour, emulsions and raising agents

5.3 Check yourself — Cooking chemistry

5.4 Preserving and protecting food: rancidity, antioxidants, preservatives and food safety

5.4 Check yourself — Preserving and protecting food

5.5 Food, culture and the future: vitamin C, fortification and new proteins

5.5 Check yourself — Food, culture and the future

Unit 5 Exam — 2 hours (eAssessment style)

Unit 6 · Chemical nomenclature Naming ionic compounds; Polyatomic ions; Covalent compounds and acids; Organic names; Functional groups. Ends with a 2-hour eAssessment-style exam.

6.1 Naming ionic compounds: positive ions, negative ions and Roman numerals

6.1 Check yourself — Naming ionic compounds

6.2 Polyatomic ions: sulfate, nitrate, carbonate, hydroxide and ammonium

6.2 Check yourself — Polyatomic ions

6.3 Covalent compounds and acids: prefixes, acid names and the salts they make

6.3 Check yourself — Covalent compounds, acids and salts

6.4 Organic names: alkanes, alkenes and the homologous series

6.4 Check yourself — Alkanes, alkenes and the homologous series

6.5 Functional groups: alcohols, carboxylic acids, esters and the trends between series

6.5 Check yourself — Alcohols, carboxylic acids and esters

Unit 6 Exam — 2 hours (eAssessment style)

Year 4 exam — on screen, 2 hours