IB Chemistry HL - 2025 - Questionbank

The IB Chemistry HL (Higher Level) 2025 Questionbank is a great source of practice questions, coming from the entire syllabus! Each question comes with a clear markscheme and solution video, with an experienced IB teacher going through the question step-by-step. The questions are organized by topic and arranged by difficulty, making it the perfect resource for studying a particular concept.

Structure 1

Models of the Particulate Nature of Matter

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All Questions in Structure 1 Models of the Particulate Nature of Matter

S1.1 - Introduction to the Particulate Nature of Matter

Elements, Compounds, Mixtures, Separation Techniques, Kinetic Molecular Theory, Changes of States

S1.2 - The Nuclear Atom

Atomic Structure, Subatomic Particles, Isotopes, Atomic Number, Mass Number, Mass Spectra Analysis

S1.3 - Electron Configurations

Hydrogen Emission Spectra, Wavelength, Frequency & Energy, Electron Configurations, Analysis of Successive IE Data

S1.4 - The Mole

Moles, Mass, Molar Mass, Relative Atomic Mass, Relative Formula Mass, Empirical vs Molecular Formulas, Avogadro's Law

S1.5 - Ideal Gases

Ideal Gases, Real Gases' Deviation, Molar Volume, Ideal Gas Equation, Combined Gas Law

Structure 2

Models of Bonding & Structure

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All Questions in Structure 2 Models of Bonding & Structure

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S2.1 - The Ionic Model

Ionic Bond, Ionic Compounds, Polyatomic Ions

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S2.2 - The Covalent Model

Expanded Octet, Resonance, VSEPR Theory for 5 & 6 Electron Domains, Formal Charges, Sigma & pi Bonds, Hybridization

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S2.3 - The Metallic Model

Metallic Bond, Metals (Conductivity, Malleability, Melting Points Trend), Transition Elements (Delocalized d-electrons)

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S2.4 - From Models to Materials

Bonding & Properties of a Material, Bonding Triangle, Alloys, Condensation Polymers, Polymerization Reactions of Alkenes

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Structure 3

Classification of Matter

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All Questions in Structure 3 Classification of Matter

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S3.1 - The Periodic Table - Classification of Elements

Discontinuities in IE, Properties of Transition Elements, Color of Transition Element Complexes

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S3.2 - Functional Groups - Classification of Organic Compounds

Stereoisomers, Mass Spectrometry of Organic Compounds, IR Spectra, Proton Nuclear Magnetic Resonance Spectroscopy

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Reactivity 1

What Drives Chemical Reactions?

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All Questions in Reactivity 1 What Drives Chemical Reactions?

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R1.1 - Measuring Enthalpy Changes

Endothermic & Exothermic Reactions, Energy Profiles, Standard Enthalpy Change Calculations

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R1.2 - Energy Cycles in Reactions

Bond Enthalpy, Hess's Law, Enthalpy of Combustion, Enthalpy of Formation, Born-Haber Cycle

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R1.3 - Energy From Fuels

Complete & Incomplete Combustion, Fossil Fuels, Greenhouse Effect, Biofuels, Renewable & Non-renewable Energy, Fuel Cell

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R1.4 - Entropy & Spontaneity

Entropy, Change in Gibbs Energy, Spontaneity of Reactions, Calculations relating ΔG & Equilibrium

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Reactivity 2

How Much, How Fast & How Far?

Reactivity 2 All

All Questions in Reactivity 2 How Much, How Fast & How Far?

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R2.1 - The Amount of Chemical Change

Stoichiometry, Mole Ratio, Limiting Reactant, Theoretical Yield, Percentage Yield, Experimental Yield, Atom Economy

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R2.2 - The Rate of Chemical Change

Rate-determining Step, Molecularity, Rate Equation, Order of Reaction, Rate Constant, Arrhenius Equation, Graph Analysis

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R2.3 - The Extent of Chemical Change

Dynamic Equilibrium, Equilibrium Constant, Reaction Quotient, Le Châtelier's Principle, ΔG & Equilibrium Constant

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Reactivity 3

Mechanisms of Chemical Change

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All Questions in Reactivity 3 Mechanisms of Chemical Change

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R3.1 - Proton Transfer Reactions

pOH, Ka, Kb, pKa, pKb, pH of a Salt Solution, pH Curves, Acid-Base Indicators, Buffer Solutions

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R3.2 - Electron Transfer Reactions

Standard Cell Potential, Electrolysis of Aqueous Solution, Electroplating, ΔG & Standard Cell Potential

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R3.3 - Electron Sharing Reactions

Radical, Homolytic Fission, Initiation, Substitution Reactions With Alkanes (Propagation, Termination)

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R3.4 - Electron-pair Sharing Reactions

Lewis Acids & Bases, SN1, SN2, Electrophilic Substitution, Rate of Substitution Reaction, Carbocation's Stability

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Tools & Inquiries

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All Questions in Tools & Inquiries

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T1 - Experimental Techniques

Calorimetry, Dilutions, Acid-Base & Redox Titration, Colorimetry

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T3 - Mathematics Tools

Uncertainties, Errors, Graphs, Significant Figures, International System of Units

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I2 - Collecting & Processing Data

Precision, Accuracy, Interpretation of Graphs & Results, Explanation of Trends & Patterns

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I3 - Concluding & Evaluating

Impact of Uncertainties, Impact of Random & Systematic Errors

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More IB Chemistry HL - 2025 Resources

Questionbank

All the questions you could need! Sorted by topic and arranged by difficulty, with mark schemes and video solutions for every question.

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Practice Exams

Choose your revision tool! Contains topic quizzes for focused study, Revision Village mock exams covering the whole syllabus, and the revision ladder to precisely target your learning.

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Key Concepts

Helpful refreshers summarizing exactly what you need to know about the most important concepts covered in the course.

Past Papers

Full worked solutions to all past paper questions, taught by experienced IB instructors.