1. Flame Tests and Ion Identification – Description of how to perform a flame test and determine the presence of specific metal ions based on observed colors. 2. Water Molecule Structure and Hydrogen Bonding – Explanation of hydrogen bonding in water, its effect on ice density, and bond angles in H₂O molecules. 3. Ionisation Energy Trends in Periodic Table – Analysis of first ionisation energy variations across a period and explanations for observed trends. 4. Redox Reactions and Disproportionation – Writing and interpreting redox equations, including the oxidation states involved in disproportionation reactions. 5. Molecular Formula Determination – Calculation of the molecular formula of a gaseous compound using the ideal gas equation. 6. Titration and Concentration Calculation – Standardisation of hydrochloric acid solution through titration, including calculations for concentration based on experimental results.