CAMBRIDGE IGCSE CHEMISTRY 0620 EXTENDED

A place to think chemistry.

Welcome to Isaac’s Chemroom. Find your chapter, revisit an idea and put it into practice.

Course overview

Chapters 1–18
01Student Space

States of Matter

Explore states, changes and diffusion through the particle model.

5 lessons · 40 min eachExplore chapter ↗
02Student Space

Separating Substances

Choose separation methods, interpret chromatography and calculate Rf.

5 lessons · 40 min eachExplore chapter ↗
03Student Space

Atoms and Elements

Connect atomic structure, isotopes, ions and periodic patterns.

3 lessons · 40 min eachExplore chapter ↗
04Student Space

Atoms Combining

Connect ions and bonds with the properties of materials.

6 lessons · flexible practiceExplore chapter ↗
05Student Space

Reacting Masses and Chemical Equations

Write formulae, balance equations and calculate reacting masses, composition and purity.

4 lessons · 40 min eachExplore chapter ↗
06Student Space

Using Moles

Connect mass, particles, gas volumes and concentration through mole ratios.

5 lessons · 40 min eachExplore chapter ↗
07Student Space

Redox Reactions

Track electrons, oxidation numbers and redox agents.

3 lessons · 40 min eachExplore chapter ↗
08Student Space

Electricity and Chemical Change

Explain electrolysis, predict products and apply electrode reactions.

5 lessons · 40 min eachExplore chapter ↗
09Student Space

Energy Changes and Reversible Reactions

Connect energy changes, fuel cells and chemical equilibrium.

6 lessons · 40 min eachExplore chapter ↗
10Student Space

Rates of Reaction

Measure reaction rates and explain changes using collision theory.

4 lessons · 40 min eachExplore chapter ↗
11Student Space

Acids, Bases and Salts

Explain acids and bases, choose salt preparation methods and apply titration calculations.

6 lessons · 40 min eachExplore chapter ↗
12Student Space

The Periodic Table

Use electronic configuration to explain group properties and predict reactions.

4 lessons · 40 min eachExplore chapter ↗
13Student Space

The Behaviour of Metals

Compare metal reactions, explain displacement and choose methods of corrosion protection.

5 lessons · 40 min eachExplore chapter ↗
14Student Space

Making Use of Metals

Explain metal extraction and connect properties with useful applications.

4 lessons · 40 min eachExplore chapter ↗
15Student Space

Air and Water

Explain air pollution, climate change and treatment of water.

4 lessons · 40 min eachExplore chapter ↗
16Student Space

Some Non-metals and Their Compounds

Apply gas tests, industrial equilibrium and carbonate reactions.

4 lessons · 40 min eachExplore chapter ↗
17Student Space

Organic Chemistry

Interpret organic structures and explain reactions, fuels and ethanol production.

6 lessons · 40 min eachExplore chapter ↗
18Student Space

Polymers

Deduce polymer structures and connect their properties with use and disposal.

3 lessons · 40 min eachExplore chapter ↗
CHAPTER 2 PRACTICE

Separation methods consolidation

Practise choosing a method and explaining why it works.

Open consolidation lesson ↗
CHAPTER 4 PRACTICE

Bonding and properties consolidation

Strengthen formulae, electron diagrams and structure–property explanations.

Open consolidation lesson ↗
PRACTICAL SKILLS

Paper 6 Practical Skills

Five flexible modules, apparatus reading and a 40-mark practice paper. Use alongside your chemistry chapters.

Open Paper 6 practice ↗

Learning in class

  1. 01Recall
  2. 02Teacher explanation
  3. 03Practice and feedback