Cambridge IGCSE · 0620

Chemistry • Notes

1. States of Matter

• Solids, liquids and gases
• Diffusion

2. Atoms, Elements & Compounds

• Elements, compounds, mixtures and atomic structure
• Isotopes and ionic bonding
• Simple molecules and covalent bonding
• Giant structures and metallic bonding

3. Stoichiometry

• Chemical formulae and equations
• Relative atomic and molecular masses
• The mole and the Avogadro constant
• Molar gas volume and concentrations
• Empirical and molecular formulae calculations
• Stoichiometric calculations, yield and purity

4. Electrochemistry

• Fundamentals of electrolysis and charge transfer
• Specific electrolysis reactions and electroplating
• Hydrogen–oxygen fuel cells

5. Chemical Energetics

• Notes

6. Chemical Reactions

• Physical and chemical changes
• Rate of reaction: measurement and graphs
• Collision theory and catalysts
• Reversible reactions and equilibrium
• Redox reactions

7. Acids, Bases and Salts

• Characteristic properties of acids and bases
• Oxides
• Preparation of salts

8. The Periodic Table

• Arrangement, Group I, and noble gases
• Halogens and transition elements

9. Metals

• Physical and chemical properties, uses, and alloys
• Reactivity series and corrosion
• Extraction of metals

10. Chemistry of the Environment

• Water and fertilisers
• Air quality and climate

11. Organic Chemistry

• Formulae, functional groups and terminology
• Naming organic compounds
• Fuels and fractional distillation
• Alkanes
• Alkenes
• Alcohols
• Carboxylic acids and esters
• Polymers

12. Experimental Techniques and Chemical Analysis

• Experimental design and apparatus
• Acid–base titrations
• Chromatography
• Separation and purification
• Identification of ions and gases

Paper 6 Skills

• Planning experiments