IB Chemistry - 2025 Syllabus

IB Chemistry Revision Hub

A comprehensive, interactive resource aimed at conceptual mastery for the 2025 Syllabus. Deep-dive content for every topic.

Course Content

Select a unit to explore topics and deep-dive content.

S1

Models of the Particulate Nature of Matter

Moles, Atomic Structure, Gases

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S2

Models of Bonding and Structure

Ionic, Covalent, Metallic Bonding

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S3

Classification of Elements

Periodic Table, Functional Groups

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R1

What Drives Chemical Reactions?

Enthalpy, Entropy, Fuel Energy

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R2

How Much, How Fast, How Far?

Stoichiometry, Kinetics, Equilibrium

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R3

Mechanisms of Chemical Change

Acids, Redox, Organic Mechanisms

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Assessment Structure

How the IB Chemistry course is assessed - external papers and internal investigation.

Multiple Choice

Paper 1A

  • No Calculator
  • No Data Booklet
  • 45 min (SL) / 60 min (HL)
Data Analysis

Paper 1B

  • Calculator Allowed
  • Data Booklet Allowed
  • Focus: Graphing, Errors, Calculations
Short & Extended Response

Paper 2

  • Calculator & Data Booklet
  • Weighting: ~36–40%
  • Short-answer + Extended-response
Interactive Tool

IA Planner & Masterclass

  • Individual hands-on investigation
  • Interactive Digital Writing Frame
  • 2025 Syllabus 24-Mark Grading Formula
  • 📖 Open IA Planner Hub →