1. Identification of carbonate and sulfate ions – Performing tests using acid and barium chloride to detect carbonate and sulfate presence in solutions. 2. Flame tests for metal ions – Observing characteristic flame colors of potassium and strontium ions and discussing limitations of mixed samples. 3. Titration experiment for acid-base reaction – Determining the concentration of ethanoic acid using sodium hydroxide and evaluating procedural errors. 4. Hess’s Law application in enthalpy calculations – Using experimental data to calculate enthalpy changes in reactions involving hydrated and anhydrous copper(II) sulfate. 5. Separation and purification of benzoic acid – Employing solvent extraction, filtration, and recrystallization techniques to isolate and purify benzoic acid. 6. Spectroscopy in organic molecule identification – Comparing infrared and NMR spectra of aromatic compounds to differentiate functional groups and molecular structures.