Free worked solutions · 2026 Edition

Worked solutions: Photon Chemistry: Study Guide for the IB Diploma (SL & HL)

Full worked solutions to every practice question in Photon Chemistry: Study Guide for the IB Diploma (SL & HL), one page per topic. Free, no sign-up.

22 syllabus topics
Tools, inquiry and the exam
582 questions
Full worked solutions
Free, no sign-up

Start at S1.1 Introduction to the particulate nature of matter About the book

Choose a topic

Scan the QR code in any topic of the book, or pick the topic here. Try each question first, then open its solution and compare your working line by line, marks included.

Structure 1. Models of the particulate nature of matter

Theme S · Topics S1

Structure 2. Models of bonding and structure

Theme S · Topics S2

Structure 3. Classification of matter

Theme S · Topics S3

Reactivity 1. What drives chemical reactions?

Theme R · Topics R1

Reactivity 2. How much, how fast and how far?

Theme R · Topics R2

Reactivity 3. What are the mechanisms of chemical change?

Theme R · Topics R3

Tools, inquiry and the exam

Skills across the course

How to use the solutions

Mark your own work like an examiner

Each solution is written as an IB mark scheme: M1 for a method mark, A1 for an answer mark that depends on the method, R1 for reasoning and AG where the answer is given in the question. Where your method differs, check that each of your lines would earn the same marks.

The questions are in Photon Chemistry: Study Guide for the IB Diploma (SL & HL). Work through Basic practice, Tutorial practice and Advanced practice, following the order in the book.