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Punjab Board Class 9 Science — Revision Notes

Punjab Board Class 9 Science revision notes, chapter by chapter across 5 chapters. Follows the PSEB syllabus. Starts with Matter in Our Surroundings, Is.

How to Revise Effectively

  • Active recall: cover the notes, try to recall the key points, then check.
  • Spaced repetition: revise each chapter again after a day, then after a few days, then after a week or two.
  • Write, don't just read: writing key points and formulas out by hand helps them stick.
  • Teach someone: explaining an idea to a friend is a good test of whether you understand it.

Chapter-Wise Revision Notes — 5 Chapters

1

Matter in Our Surroundings

4 topics
  • Physical Nature of Matter
  • Characteristics of Particles of Matter
  • States of Matter – Solid, Liquid, and Gas
  • Change of State of Matter
Matter is any substance that hasMatter is composed of extremely smallParticles of matter have three keyDiffusion is the process where particlesSolids have definite shape
Read the Matter in Our Surroundings notes
2

Is Matter Around us Pure?

4 topics
  • 1. Pure Substances vs Mixtures — The Basics
  • 2. Types of Mixtures — Homogeneous and Heterogeneous
  • 3. Solutions — Properties and Concentration
  • 4. Suspension — Properties and Examples
A pure substance contains only oneHomogeneous mixtures have uniform compositionSuspensions are heterogeneous mixtures where solidColloids are intermediate between solutionsThe Tyndall effect is the scattering
Read the Is Matter Around us Pure? notes
3

Atoms and Molecules

4 topics
  • Historical Background and Laws of Chemical Combination
  • Dalton's Atomic Theory
  • Atoms – Size, Symbols, and Atomic Mass
  • Molecules – Elements, Compounds, and Atomicity
This law states that mass canThis law states that in anyJohn Dalton proposed the first modernAn atom is the smallest particleAtomic mass is the mass
Read the Atoms and Molecules notes

2 more chapters below

Revision notes with diagrams and examples for all 5 chapters in Super Tutor.

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Frequently Asked Questions

Where can I find Punjab Board Class 9 Science Revision Notes?

This page has revision notes for 5 chapters of Punjab Board Class 9 Science for the 2026-27 session. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Browse Revision Notes by Chapter

5 chapters

1

Matter in Our Surroundings

2

Is Matter Around us Pure?

3

Atoms and Molecules

4

Structure of the Atom

5

The Fundamental Unit of Life

More Science Resources

Punjab Board Class 9

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Formula Sheet

The formulas of each chapter in one place

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Flashcards

Quick-fire cards for active recall practice

Syllabus

Chapter list and the topics in each

Other Punjab Board Class 9 Subjects

Mathematics