1. Isotopes and Atomic Structure – Identification of similarities and differences between isotopes of bromine based on particle composition. 2. Chemical Titration and Hydrated Salts – Calculation of water of crystallization in sodium carbonate using titration data. 3. Intermolecular Forces and Solubility – Explanation of solubility trends in water and organic solvents based on molecular polarity. 4. Periodic Trends in Ionisation Energy – Analysis of ionisation energy variations in Group 6 elements, including sulfur and chlorine. 5. Bonding and Electrical Conductivity – Comparison of bonding structures in graphite and diamond to explain differences in electrical conductivity. 6. Halogen Chemistry and Redox Reactions – Examination of disproportionation reactions of chlorine with sodium hydroxide at different temperatures.