Test a leaf for starch to demonstrate photosynthesis. Step-by-step destarching, iodine test method and results for IGCSE and IB biology practical work.
Tag: Edexcel IGCSE
Enthalpy – Thermometric titration
Thermometric titration practical: determine enthalpy of neutralisation for HCl and ethanoic acid with NaOH. IB and A-level method with temperature-time graphs.
Enthalpy – Hess Cycles
Determine the enthalpy change for MgSO4 + 7H2O using Hess cycles. IB and A-level chemistry practical with calorimetry method and worked Hess cycle calculations.
Enthalpy – Student Design
Student-designed enthalpy experiment: measure the enthalpy of solution of ammonium chloride using calorimetry. Ideal IB IA practice with skills development.
Titration – Precipitation
Precipitation titration: determine water of crystallisation in hydrated barium chloride using silver nitrate. IB and A-level chemistry method and calculations.
Titration Acid-Base (Simple)
Simple acid-base titration: determine HCl concentration using NaOH. Step-by-step method, safety precautions and calculations for IB and IGCSE chemistry.