Study Notes | IGCSE Chemistry 0620 | 3. Stoichiometry

This Study Note summarises what you need to know about

3. Stoichiometry from the Cambridge IGCSE syllabus of Paper Chemistry 0620, for exams in 2023,2024 and 2025.

Subtopics include:

• Formulae
• Molecular Formula of a Compound
• Empirical Formula of a Compound
• Valency
• Formulae of Ionic Compounds
  
• Word Equations
• State Symbols
• Symbol Equations
• Guidelines for Naming Compounds
• Ionic Equations
• Deducing Symbol Equations
• Relative Masses of atoms and molecules
• The Mole and the Avogadro Constant
• Mole and Volume of Gas
• Moles, Mass and Molar Mass
• Calculating Reacting Masses
• Limiting Reactants
• Concentration
• Empirical & Molecular Formulae
• Calculating Empirical Formulae
• Calculating Molecular Formulae
• Percentage Yield
• Percentage Composition by Mass
• Percentage Purity