CBSE Syllabus for Class 9 Science 2025-26

Class IX marks a complete turnaround in students’ academic journey from basic learning to in-depth analysis of facts and reasons of various subjects, with science being one of the core. In class 9, the subject enables students to see the world through a completely different perspective, and the CBSE syllabus for Class 9 Science plays the protagonist to do so. Understanding this curriculum is as important as understanding the topics this subject includes, to not only ace the final exam but to form a solid base for higher study of science. 

This is why we bring you a comprehensive breakdown of the CBSE Class IX Science syllabus, from the marking scheme to the practical assessments. 

1.0Overview of Science Syllabus of Class 9

The CBSE Syllabus for Class 9 Science is evenly divided into four major branches of science, namely:  

• Physics
• Chemistry
• Biology
• Environmental Science 

The curriculum for each of these branches is designed to foster curiosity and encouragement in students to explore and reason about the various phenomena of the physical world. The students are tested at the end of the academic year via a final theory exam carrying 80 marks and internal assessments of 20 marks. 

2.0Chapter–wise CBSE Class IX Science Syllabus

3.0Detailed CBSE Class 9 Science Syllabus 2025-26 - Download Free PDF

Theme: Materials

Unit I: Matter-Nature and Behaviour

Matter in Our Surroundings: Definition of matter; Particulate Nature of Matter; States of

Matter: solid, liquid and gas and their characteristics; change of state- melting (absorption

of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation.

Is Matter Around Us Pure: Elements, compounds and mixtures. Heterogeneous and

homogenous mixtures, colloids and suspensions. Physical and chemical changes

(excluding separating the components of a mixture); Pure and Impure substances.

Atoms and Molecules: Atoms and molecules, Law of Chemical Combination, Chemical

formula of common compounds, Atomic and molecular masses.

Structure of atom: Sub-atomic particles: Electrons, protons and neutrons, Models of

atom; Valency, Atomic Number and Mass Number, Isotopes and Isobars.

4Theme: The World of the Living

Unit II: Organization in the Living World

Cell - Basic Unit of life: Cell as a basic unit of life; prokaryotic and eukaryotic cells,

multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions;

chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus,

chromosomes - basic structure, number.

Tissues, Organs, Organ System, Organism:

Structure and functions of animal and plant tissues (only four types of tissues in animals;

Meristematic and Permanent tissues in plants).

Theme: Moving Things, People and Ideas

Unit III: Motion, Force and Work

Motion: Distance and displacement, velocity; uniform and non-uniform motion along a

straight line; acceleration, distance-time and velocity-time graphs for uniform motion and

uniformly accelerated motion, elementary idea of uniform circular motion.

Force and Newton’s laws: Force and Motion, Newton’s Laws of Motion, Action and

Reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration.

Gravitation: Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth

(gravity), Acceleration due to Gravity; Mass and Weight; Free fall.

Floatation: Thrust and Pressure. Archimedes’ Principle; Buoyancy.

Work, Energy and Power: Work done by a Force, Energy, power; Kinetic and Potential

energy; Law of conservation of energy (excluding commercial unit of Energy).

Sound: Nature of sound and its propagation in various media, speed of sound, range of

hearing in humans; ultrasound; reflection of sound; echo.

Theme: Food

Unit IV: Food Production

Plant and animal breeding and selection for quality improvement and management; Use

of fertilizers and manures; Protection from pests and diseases; Organic farming.

4.0Internal Assessment

Internal assessment in the science syllabus of class 9 is designed to assess different skills of students over the academic year. It is divided into four major portions of 5 marks each, combining a total of 20 marks. These portions are: 

5.0Study Aids Beyond the NCERTs

While textbooks are the core of the CBSE syllabus for Class 9 Science, a complete understanding of the subject develops from the combination of various study aids with the NCERTs. Here’s a complete list of powerful tools that can go beyond your traditional textbook and eventually enhance your science prep: 

1. NCERT Solutions: NCERT solutions are excellent for understanding the step-by-step reasons and facts behind the answers to every question in the textbook. Various solution guides are available online as well as in the market, making them easily available. 
2. NCERT Exemplar Problems: These offer higher-order thinking questions that adhere to the class 9 science syllabus and refine problem-solving ability, particularly in Physics and Chemistry.
3. Previous Year Papers: Solving questions from previous exams helps students become accustomed to the paper pattern, question types, and timing, which are vital for excelling in the CBSE Class IX Science syllabus.
4. Virtual Labs and Simulations: Various digital platforms enable students to perform virtual experiments, making them ideal for learning lab concepts when access to physical lab space is not feasible.
5. CBSE Support Material: Formulated and released by CBSE and other board educational institutions, this material features additional questions, practice problems, and sample question papers that offer comprehensive practice in key topics.
6. Science Kits and Experiments: Practical kits in Physics (such as circuit boards), Chemistry (simple chemical reactions), and Biology (microscope kits) tend to make learning more three-dimensional.
7. Reference Books: For advanced and detailed study, use extra books available in the market. These can help understand science concepts in more detail. Some of the most popular reference books are: 

Lakhmir Singh Science for Class 9th

All in One by Arihant

NCERT at Your Fingertips

Flashcards and Mind Maps: These are ideal for memorising definitions, formulas, and cycles, especially useful in Biology and Chemistry sections.

1. Sample Papers and Mock Tests: Solving these from time to time aids in time management and boosts confidence before exams.

6.0Tips to Ace Your Exam

Scoring well in Science requires a smart mix of understanding concepts and consistent revision. Here are some practical tips to excel in your final science exam:

• Use extra study aids, but also stick to the NCERT textbook as your primary study source, as it covers the entire CBSE syllabus for Class 9 Science better than any other resource.
• Revise regularly using class notes, mind maps, and flashcards to reinforce key definitions, formulas, and diagrams.
• Practice numerical problems in Physics and Chemistry thoroughly, as they often carry high weightage.
• Solve previous year papers and sample questions to build confidence and improve time management.
• Focus on practicals—prepare observation-based questions from experiments listed in the syllabus.
• Break down chapters into small, daily goals for easier learning and retention.

Stay updated with the CBSE Class IX Science syllabus and make sure to download the official CBSE syllabus for Class 9 Science PDF to start your exam prep.