Tag: IB DP

IB Biology IA: Beetroot and Cell Membrane Permeability

IB Biology IA: Beetroot and Cell Membrane Permeability

IB Biology IA: Beetroot and Cell Membrane Permeability In this investigation, you will use beetroot tissue to explore how increasing temperature affects the permeability of cell membranes. As membranes are damaged by heat, the red pigment anthocyanin leaks out of the vacuole — the more pigment released, the more permeable the membrane has become. A colorimeter is used to measure absorbance quantitatively, making this an excellent IB Biology IA investigation. This practical is suitable for IB Diploma Biology and Edexcel IGCSE Biology students.

IB Chemistry IA: Enthalpy of Neutralisation Experiment Guide

IB Chemistry IA: Enthalpy of Neutralisation Experiment Guide

In this investigation, you will measure the enthalpy of neutralisation (ΔHₙₑᵤₜ) for a strong acid and a weak acid reacting with a strong base, and use the difference to explore the relationship between enthalpy change and acid dissociation constants (Kₐ and pKₐ). This practical is suitable for IB Diploma Chemistry HL and makes an excellent Internal Assessment (IA) topic.

IB Chemistry IA: Investigating Reaction Rates with Temperature Changes

IB Chemistry IA: Investigating Reaction Rates with Temperature Changes

The iodine clock reaction is a classic chemistry experiment that produces a dramatic, sudden colour change from colourless to deep blue-black. In this investigation, you will explore how changing the temperature affects the rate of this reaction and use your results to determine the activation energy of the reaction.

Understanding Titration: Calculating Water of Crystallization

Understanding Titration: Calculating Water of Crystallization

This chemistry practical aims to determine the value of x in Fe(NH4)2(SO4)2.xH2O through titration with potassium manganate (VII). The experiment involves mixing ammonium iron(II) sulfate with dilute sulfuric acid and titrating until the endpoint is reached. Results facilitate calculations of water of crystallization in the compound.