Atoms, Molecules & Stoichiometry
This is a study guide for students covering the CIE AS Chemistry Syllabus, 2025-2027. It contains many worked problems modeling the applications of stoichiometric rules.
It covers the syllabus following sections:
2 Atoms, molecules and stoichiometry
2.1 Relative masses of atoms and molecules
2.2 The mole and the Avogadro constant
2.3 Formulas
2.4 Reacting masses and volumes (of solutions and gases)