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CBSE Class 9 Science Notes (2025-26)
By Karan Singh Bisht
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Updated on 6 Oct 2025, 16:46 IST
Self-made notes are high-leverage for exam prep. They condense each chapter for rapid revision, clarify tough ideas, and help you cover the full syllabus with confidence.
CBSE Class 9 Science Notes- FREE PDF Download
Class 9 Science Notes simplify tough ideas. They convert heavy concepts into clear, point-wise takeaways from the NCERT text so students grasp and retain the essentials fast. Use them for quick, high-yield revision before exams.
Download the FREE Class 9 Science Notes PDF, aligned to the latest CBSE syllabus 2025-26. Get a concise, updated guide to study smarter and prepare confidently for your exams.
CBSE Class 9 Science Notes Chapter-wise Links
| S. No | Links for Chapter-wise Class 9th Science Notes |
| 1 | Chapter 1 – Matter in Our Surroundings Notes |
| 2 | Chapter 2 – Is Matter Around Us Pure? Notes |
| 3 | Chapter 3 – Atoms and Molecules Notes |
| 4 | Chapter 4 – Structure of the Atom Notes |
| 5 | Chapter 5 – The Fundamental Unit of Life Notes |
| 6 | Chapter 6 – Tissues Notes |
| 7 | Chapter 7 – Motion Notes |
| 8 | Chapter 8 – Force and Laws of Motion Notes |
| 9 | Chapter 9 – Gravitation Notes |
| 10 | Chapter 10 – Work and Energy Notes |
| 11 | Chapter 11 – Sound Notes |
| 12 | Chapter 12 – Improvement in Food Resources Notes |
CBSE Class 9 Science Chapter Wise Scheme 2025- 2026
CBSE has issued the subject-wise revised Class 9 syllabus for 2025–26. Students entering Class 9 this session should review the new syllabus to know the topics and subjects they’ll study this year.
| Unit No. | Unit | Marks |
| I | Matter — Its Nature and Behaviour | 25 |
| II | Organization in the Living World | 22 |
| III | Motion, Force and Work | 27 |
| IV | Food; Food Production | 6 |
| Total (Theory) | 80 | |
| Internal Assessment | 20 | |
| Grand Total | 100 | |
Important Concepts from Class 9 Science Chapters
- Matter & Properties: States of matter; physical vs chemical change; effect of temperature and pressure.
- Atomic Structure & Reactions: Atomic theory, atom model, periodic table basics; laws of conservation of mass and constant proportions.
- Cell Structure & Function: Cell theory, organelles, and plant–animal cell differences.
- Tissues & Organ Systems: Types of plant and animal tissues and how they enable organ functions.
- Forces & Motion: Speed, velocity, acceleration; Newton’s laws and force effects.
- Gravitation: Universal law, mass vs weight, free fall, buoyancy.
- Work, Energy, Power: Work–energy link, kinetic and potential energy, conservation, power.
- Sound: Nature of sound waves, propagation in media, uses like SONAR.
- Improvement in Food Resources: Farming practices, sustainability, and science-led gains in crops and livestock.
Importance of Class 9 Science Notes
Class 9 Science builds the base for higher studies. Strong conceptual clarity drives CBSE exam performance.
- Clarify complex ideas: convert tough concepts into simple points.
- Streamline revision: scan key topics fast before exams.
- Boost retention: add diagrams and visuals.
- Optimize study time: target exam-relevant themes.
- Organize notes: keep structure clean and searchable.
- Facilitate practice: use solved examples and question sets.
- Deepen understanding: connect concepts across chapters.
- Enhance exam readiness: prepare for all question types.
| S. No | Related Study Materials Links for Class 9 |
| 1. | CBSE Class 9 NCERT Solutions |
| 2. | CBSE Class 9 Important Questions |
| 3. | RD Sharma Class 9 Solutions |
Exam Preparation Tips for CBSE Class 9 Science
- Know the syllabus. Check chapter weightage. Prioritize high-mark topics.
- Plan study time. Schedule all chapters. Spend extra time on tough ones. Revisit the easy ones.
- Use NCERT first. Read concepts, then solve every in-text and end exercise.
- Leverage notes. Keep a Class 9 Science Notes PDF for fast revision of key points.
- Practice papers. Solve past years and samples to learn pattern, question types, and timing.
- Master diagrams and formulas. Practice neat labels. Drill formulas. They score quickly.
- Revise on a loop. Revisit definitions, laws, and key ideas until recall is instant.
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FAQs on CBSE Class 9 Science Notes
Where can I download the CBSE Class 9 notes?
Download Class 9 Science notes as FREE PDFs from Infinity Learn Online Learning Platform. Prioritize NCERT-aligned versions and the latest 2025–26 syllabus.
How do I find chapter-wise notes quickly?
Open Infinity Learn search “Class 9 Science Notes”, use the chapter index (Ch 1 to Ch 12) and tap the chapter to download.
What topics are covered in Class 9 Science Notes?
All NCERT units on Infinity Learn: Matter, Atomic Structure, Cell, Tissues, Motion, Force & Laws, Gravitation, Work & Energy, Sound, and Improvement in Food Resources.
What are the features of Infinity Learn CBSE Class 9 Science notes?
CBSE Class 9 Science Notes are a high-value prep resource. They streamline study and sharpen exam readiness.
Why use Infinity Learn’s notes
- Complete, clearly explained coverage of every concept in the Class 9 Science syllabus.
- Time-saver: ready-made, structured material replaces making notes from scratch.
- Built by Infinity Learn experts after deep NCERT mapping, written for quick comprehension.
- Available on the Infinity Learn website as FREE downloads.