CAIE IGCSE Chemistry 0620/62 May/June 2022 – Alternative to Practical model answers: apparatus ID/uses, gas experiments, titration tables & calculations, indicators, accuracy/error notes, and qualitative tests (e.g., NH₃, SO₂). 
Includes step-by-step methods (e.g., caffeine extraction), observations with reasoning, and concise exam tips for full marks.