CBSE Class 9 Science Syllabus 2026-27

Introduction

The CBSE Class 9 Science syllabus 2026-27 introduces students to the fundamental principles of Physics, Chemistry, Biology, and Environmental Science. This integrated science course develops scientific reasoning, laboratory skills, and conceptual understanding that serve as the foundation for Class 10 board examinations and higher-level competitive examinations such as NEET and JEE.

This page provides a complete guide to the CBSE Class 9 Science syllabus 2026-27, including unit-wise content, chapter overviews, exam pattern, practical list, recommended books, marking scheme, study tips, and frequently asked questions for students, parents, and educators.

Quick Facts: CBSE Class 9 Science 2026-27

Exam Pattern: CBSE Class 9 Science 2026-27

The Class 9 Science theory paper assesses students across multiple question types. Internal assessment includes lab work, periodic tests, and project work. Practical skills are assessed separately as part of internal assessment.

Detailed Chapter-wise Syllabus: All Units

Unit I: Matter and Its Nature (Chemistry)

This unit covers the states of matter, their properties, interconversions, and classification. Students also study the structure of the atom and atomic models.

Chapter 1: Matter in Our Surroundings

•       Definition and physical nature of matter

•       States of matter: solid, liquid, gas and their properties

•       Interconversion of states: melting, boiling, evaporation, condensation, sublimation

•       Effect of temperature and pressure on states of matter

Chapter 2: Is Matter Around Us Pure?

•       Mixtures and their types: homogeneous and heterogeneous

•       Solutions, suspensions, and colloids

•       Separation techniques: evaporation, filtration, distillation, chromatography

•       Pure substances: elements and compounds

Chapter 3: Atoms and Molecules

•       Laws of chemical combination: Law of Conservation of Mass, Law of Constant Proportions

•       Atoms, molecules, and their symbols

•       Atomic mass, molecular mass, mole concept

•       Writing chemical formulae

Chapter 4: Structure of the Atom

•       Discovery of electrons, protons, and neutrons

•       Atomic models: Thomson, Rutherford, Bohr

•       Atomic number, mass number, valency

•       Isotopes and isobars

Unit II: Organisation in the Living World (Biology)

This unit introduces students to the biological organisation of living beings, from the cell level through tissues and organs, to the diversity of life on Earth and its classification.

Chapter 5: The Fundamental Unit of Life

•       Cell as the basic unit of life: discovery of cell and cell theory

•       Prokaryotic and eukaryotic cells

•       Plant cell and animal cell: differences and organelles

•       Functions of cell organelles: nucleus, mitochondria, chloroplast, ER, ribosomes, Golgi apparatus, vacuoles, lysosomes

Chapter 6: Tissues

•       Plant tissues: meristematic and permanent (simple and complex)

•       Animal tissues: epithelial, connective, muscular, and nervous tissue

Chapter 7: Diversity in Living Organisms

•       Basis of classification of living organisms

•       Hierarchy of classification: Kingdom to Species

•       Classification of plants: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms

•       Classification of animals: Non-chordates to Chordates

•       Nomenclature: binomial nomenclature

Unit III: Motion, Force and Work (Physics)

This unit covers core Physics concepts including motion, force, gravity, and the laws of motion. It also introduces the concept of sound as a form of energy.

Chapter 8: Motion

•       Distance and displacement, speed and velocity

•       Uniform and non-uniform motion

•       Acceleration and retardation

•       Equations of motion

•       Uniform circular motion

Chapter 9: Force and Laws of Motion

•       Balanced and unbalanced forces

•       Newton's First, Second, and Third Laws of Motion

•       Inertia and mass, momentum, impulse

•       Conservation of Momentum

Chapter 10: Gravitation

•       Universal Law of Gravitation

•       Free fall, mass and weight

•       Thrust and pressure, Archimedes' Principle

•       Relative density, buoyancy

Chapter 11: Work, Energy and Power

•       Work done by a force, kinetic and potential energy

•       Law of Conservation of Energy

•       Power and commercial unit of energy

Chapter 12: Sound

•       Production and propagation of sound

•       Characteristics of sound: amplitude, frequency, wavelength, speed

•       Reflection of sound, echo, reverberation

•       Range of hearing, applications of ultrasound, SONAR

Unit IV: Our Environment (Environmental Science)

Chapter 13: Why Do We Fall Ill?

•       Health and disease, causes of disease

•       Infectious and non-infectious diseases

•       Principles of treatment and prevention

Chapter 14: Natural Resources

•       Air, water, and soil as resources

•       Biogeochemical cycles: water, oxygen, carbon, nitrogen

•       Pollution and its effects

Chapter 15: Improvement in Food Resources

•       Food requirements: carbohydrates, proteins, fats

•       Crop production improvement, crop protection

•       Animal husbandry: cattle, poultry, fish, bee farming

Chapter Overview and Marks Weightage

Practical and Internal Assessment Breakdown

Practical activities include experiments on verification of laws of motion, preparation of mixtures and solutions, study of plant and animal cells, study of sound waves, and more. Students are expected to maintain a practical notebook and submit it for assessment.

Recommended Books for CBSE Class 9 Science 2026-27

Preparation Tips for CBSE Class 9 Science

Class 9 Science requires a combination of conceptual understanding, formula memorisation, and practical observation skills. The following strategies will help students prepare effectively across all three disciplines covered in this subject.

•       Understand concepts before memorising: Especially for Physics, understanding the derivation of laws and equations helps in applying them to numerical problems correctly.

•       Draw and label diagrams: Biology chapters require accurate, labelled diagrams. Practise drawing cell organelles, tissue types, and other biological structures.

•       Practise numericals daily: Chapters on Motion, Force, Gravitation, and Work involve numerical problems. Solve at least 5-10 numericals daily from each of these chapters.

•       Memorise chemical formulae and equations: For Chemistry chapters, create flashcards for atomic symbols, molecular formulae, and chemical equations.

•       Complete practical work seriously: Practical exercises reinforce theory and also carry marks in internal assessment. Maintain a neat practical notebook.

•       Revise NCERT thoroughly: All examination questions are based on NCERT. Ensure every in-text question and exercise is completed and understood.

Frequently Asked Questions (FAQs)

How many chapters are in CBSE Class 9 Science syllabus 2026-27?

The CBSE Class 9 Science syllabus 2026-27 covers 15 chapters across four units: Chemistry (Chapters 1-4), Biology (Chapters 5-7), Physics (Chapters 8-12), and Environmental Science (Chapters 13-15).

Which unit carries the most marks in Class 9 Science?

Unit III (Motion, Force and Work), which covers the Physics portion, carries the highest weightage of 27 marks in the 80-mark theory paper. Students should dedicate significant preparation time to this unit.

Is practical work compulsory for Class 9 Science?

Yes, practical activities are a compulsory component of Class 9 Science and form part of the 20-mark internal assessment. Students must complete laboratory experiments, maintain a practical notebook, and submit project work as specified by their school.

Is the Class 9 Science syllabus the same for all CBSE schools?

Yes, the CBSE Class 9 Science syllabus is standardised across all affiliated CBSE schools in India. However, the internal assessment components and practical activities may vary slightly in implementation from school to school, while remaining within CBSE guidelines.