IB Chemistry — 2025 Syllabus

IB Chemistry Revision Hub

A comprehensive, interactive resource aimed at conceptual mastery for the 2025 Specification. 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

S2

Models of Bonding and Structure

Ionic, Covalent, Metallic Bonding

S3

Classification of Elements

Periodic Table, Functional Groups

R1

What Drives Chemical Reactions?

Enthalpy, Entropy, Fuel Energy

R2

How Much, How Fast, How Far?

Stoichiometry, Kinetics, Equilibrium

R3

Mechanisms of Chemical Change

Acids, Redox, Organic Mechanisms

What is IB Chemistry?

IB Chemistry is a rigorous, internationally recognized course that explores the composition, structure, and properties of matter at both the molecular and atomic level. From understanding how atoms bond to form complex molecules, to analyzing the energy changes that drive chemical reactions, this course provides a comprehensive foundation in one of science's most central disciplines.

Career Pathways

A strong foundation in IB Chemistry opens doors to careers in medicine and pharmacy, chemical engineering, environmental science, and biochemistry and biotechnology. Whether you aspire to be a forensic scientist, food technologist, materials researcher, or academic, IB Chemistry provides the essential skills and knowledge to succeed.

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
Internal Assessment

Scientific Investigation

  • Individual hands-on investigation
  • Design, Analysis, Conclusion, Evaluation
  • 20% of Final Grade