Pearson Edexcel International GCSE Chemistry (4CH1)
68 free lessons that follow the International GCSE specification topic by topic. Each lesson has short notes, a worked example and a quick check with instant marking.
International GCSE · Pearson Edexcel 4CH1
Getting started
4 lessons · about 55 minutes
1(a) to (b) States of matter, and elements, compounds and mixtures
6 lessons · about 84 minutes
1(c) to (d) Atomic structure and the Periodic Table
5 lessons · about 73 minutes
1(e) Chemical formulae, equations and calculations
5 lessons · about 86 minutes
1(f) to (i) Bonding, structure and electrolysis
10 lessons · about 2 h 40 min
- Ionic, covalent and metallic bonding · video 18 min
- Ions and ionic formulae 15 min
- Ions, ionic formulae and ionic lattices 16 min
- Covalent molecules and their properties 16 min
- Covalent molecules, dot and cross diagrams and models 15 min
- Structures and their properties · video 16 min
- Metallic bonding 13 min
- Electrolysis · video 17 min
- Electrolysis and half-equations 18 min
- Core practical: electrolysis of copper sulfate 17 min
2(a) to (c) Groups 1 and 7, and gases in the atmosphere
4 lessons · about 61 minutes
2(d) to (e) Reactivity series, and extraction and uses of metals
6 lessons · about 88 minutes
2(f) to (h) Acids, bases, salts and chemical tests
8 lessons · about 1 h 55 min
- Acids, alkalis and pH · video 14 min
- Acids and bases: proton transfer 14 min
- Neutralisation and salts · video 16 min
- Solubility rules for ionic compounds 12 min
- Making a soluble salt from an insoluble base 15 min
- Making salts and solubility · video 16 min
- Tests for gases and water 12 min
- Tests for ions · video 17 min
3 Physical chemistry
8 lessons · about 2 h 5 min
- Calorimetry and enthalpy changes 17 min
- Energy changes in reactions · video 17 min
- Rates of reaction · video 16 min
- Collision theory and catalysts · video 15 min
- Rate experiments: marble chips and catalysts 15 min
- Reversible reactions 12 min
- Reversible reactions and equilibrium · video 16 min
- Changing the position of equilibrium 16 min
4 Organic chemistry
12 lessons · about 3 h 5 min
- Introduction to organic chemistry 17 min
- Crude oil and fractional distillation · video 15 min
- Fuels, combustion and acid rain 15 min
- Combustion, pollutants and cracking · video 16 min
- Alkanes 15 min
- Alkenes and the bromine water test 15 min
- Alcohols and carboxylic acids · video 15 min
- Making and oxidising ethanol 16 min
- Carboxylic acids and esters 17 min
- Addition polymers 15 min
- Polymers · video 15 min
- Condensation polymers, polyesters and recycling polymers 15 min