1. Electronic Configuration and Periodicity – Determination of the electronic configuration of an arsenide ion and explanation of periodicity trends in atomic radii. 2. Ionization Energy and Successive Trends – Analysis of first ionization energy trends across Period 3 and deductions from ionization energy graphs. 3. Covalent Bonding and Molecular Structure – Explanation of covalent bond formation in hydrazine and prediction of bond angles. 4. Mass Spectrometry and Isotopic Analysis – Calculation of the relative atomic mass of potassium based on isotopic abundance. 5. Halogen Reactions and Redox Chemistry – Investigation of displacement reactions of halogens and the effect of sulfuric acid on potassium iodide. 6. Thermal Decomposition and Gas Volume Calculations – Calculation of carbon dioxide volume from malachite decomposition using the ideal gas equation.