Unit 3 — Stoichiometry
The Mole and the Avogadro Constant — O Level Chemistry Chemistry
Using the mole as a unit of amount of substance, and calculations involving the Avogadro constant.
Topic Overview
Using the mole as a unit of amount of substance, and calculations involving the Avogadro constant. This sits within O Level Chemistry (Cambridge), alongside the other topics on that syllabus.
Topical Past Papers
Real exam questions on The Mole and the Avogadro Constant, compiled by topic rather than by year, testing understanding rather than recall alone. Newer files include their own answers.
MCQs
Quick-check multiple-choice questions on The Mole and the Avogadro Constant, for testing recall and spotting gaps fast.
O Level Chemistry Notes
Presentation notes for The Mole and the Avogadro Constant, for online study — view only.
Notes coming soon