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Free Chemistry Revision Notes

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GCSE Chemistry

GCSE chemistry notes, foundation explanations and structured practice resources are being prepared for school-level learners.

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A Level Chemistry

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Undergraduate chemistry notes, topic summaries and advanced practice resources are being prepared for university-level learners.

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Some ionic radii are shown.

Ion Ionic radius / nm
Na+ 0.102
K+ 0.138
F 0.133
Cl 0.180

Which compound has the strongest ionic bonding?

sodium chloride
potassium chloride
sodium fluoride
potassium fluoride

(ii)   Melting temperature depends on the strength of metallic bonding.
Explain why the metallic bonding in magnesium is much stronger than that in sodium.
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FAQ

Yes. The chemistry revision notes are free to access and students do not need to create an account or sign in to use them. They are designed as open study support for learners who want clear explanations, structured topic guidance and active practice before moving on to more advanced questions.
No. The free chemistry notes are available without an account. Learners can open the relevant chemistry page, choose their topic and begin studying straight away. This makes the notes useful for quick revision, independent study, exam preparation and checking understanding after lessons.
The notes are written to support active chemistry learning rather than passive reading. They combine concise explanations, topic structure, interactive H5P questions, practice tasks and worked answers so that learners can test knowledge as they study. The aim is to help students move from recognising content to applying chemistry accurately.
The Chemistry resources are written by Dr. Mohammed Al-Fatah, who has a BSc Chemistry from UCL with first-class honours, an MSc in Advanced Chemical Research from UCL, an MA Education from UCL and a PGCE in Secondary School Chemistry from Goldsmiths. He has over a decade of chemistry teaching experience across secondary, sixth-form and online learning contexts.
Yes. The free chemistry notes include interactive H5P-style questions where appropriate. These questions are designed to check understanding while learners study, helping them identify gaps quickly rather than waiting until the end of a topic. This makes the pages more active than standard written notes.
Yes. The chemistry pages include practice questions, worked answers and topic support where relevant. The purpose is not only to explain the content, but also to help learners understand how chemistry ideas are applied in questions and problem-solving tasks.
A Level Chemistry revision notes are currently available. GCSE Chemistry, Undergraduate Chemistry and Masters Level Chemistry resources are planned and will be added as the platform develops. The page has been structured so learners can access available levels immediately while clearly seeing which levels are still in preparation.
The free chemistry notes give learners open access to topic explanations and interactive practice. The full courses go further by adding structured virtual lessons, more complete question banks, short-answer practice, guided assignments and specialist feedback. The notes are useful for revision, while the full courses are designed for deeper topic mastery.