SPM Form 4 Chemistry Chapter 3 – Chemical Formulae and Equations by Revision Notes 3.1 Relative Mass3.2 Concept of Mole3.3 Number of Mole and Mass3.4 Number of Mole and Volume of Gas3.5 Chemical Formulae3.6 Formula of Ionic Compounds and Molecules3.7 Chemical Equations Videos Relative Atomic MassRelative Molecular MassConcept of MoleMole and Number of ParticlesMolar MassChemical FormulaeFinding Empirical FormulaFinding Molecular Formula