GCSE Chemistry, made easy.
Free video lessons, worksheets and exam practice by Dr Richard Willis.
Chemistry explains everything — from why bread rises to how explosives work. Taught by a teacher with 20 years in the classroom, this course makes it click, step by step, completely free.
Who is this for?
Whether you're revising, teaching or just interested in chemistry — you're in the right place.
A growing collection of video lessons on topics across the specification.
- Short video lessons for every topic on the spec
- Worksheets and practice questions to download
- Exam-style questions with full mark schemes
- No sign-up. No subscription. No catch.
Helping your child through GCSE Chemistry?
Teaching chemistry? Take whatever you need.
The whole GCSE Chemistry curriculum, in one place.
Our growing collection of resources across the specification. Every video, every lesson, every worksheet. Free.
Start here
General introduction
What chemistry is and how this course works
Foundational
Working Scientifically
Skills and methods used by scientists
Topic 01
Atomic structure
Atoms, electrons and the periodic table
Topic 02
Bonding & structure
Ionic, covalent and metallic bonds
Topic 03
Quantitative chemistry
Moles, equations and calculations
Topic 04
Chemical changes
Reactions, electrolysis and acids
Topic 05
Energy changes
Exothermic, endothermic and bond energies
Topic 06
Rate of reaction
Catalysts, concentration and temperature
Topic 07
Organic chemistry
Crude oil, polymers and alcohols
Topic 08
Chemical analysis
Tests, chromatography and gas identification
Topic 09
Earth's atmosphere
Gases, climate change and atmosphere history
Topic 10
Using resources
Water, materials and sustainability
Every topic contains videos, notes, worksheets and practice. See the full course →
Three ways to learn each topic
Every topic on the course comes with a video lesson, a downloadable worksheet, and exam-style questions with mark schemes — so you can watch, practise, and test yourself at your own pace.
Browse the courseWatch
Short, focused video lessons. No filler, no waffle.
Practice
Free worksheets to download and work through at your own pace.
Test yourself
Exam-style questions with full mark schemes included.
Hi, I'm Richard.
I've loved chemistry ever since my very first lesson. That passion took me from a doctorate at Imperial College London to more than twenty years teaching chemistry in secondary schools before taking my classroom online through The Helpful Chemist.
Today, I have the privilege of teaching anyone, anywhere, for free, because I believe a world-class education should be available to everyone. So join me on a journey of discovery, because chemistry isn't something to memorise—it's the story of how our universe works.
More About Me