Unit 2 — Atoms, Elements and Compounds
Atomic Structure and the Periodic Table Chemistry Topical Past Papers — O Level
Real Cambridge exam questions on Atomic Structure and the Periodic Table, compiled by topic rather than by year — not a yearly past-paper archive, just this topic on its own. Newer files include their own answers.
CambridgeO Level
Atomic Structure and the Periodic Table Topical Past Papers
Topical Past Papers coming soon
Resources for this topic are being prepared.
In the meantime, here are a few places that might help instead: