CBSE Science Syllabus for Class 9th

CBSE Science Syllabus — Complete Class 9 curriculum breakdown, weightage, practicals, and study strategy. Download official CBSE & NCERT PDFs and get targeted tips to plan term-wise study.

COURSE STRUCTURE CLASS 9 (Annual Examination):

CBSE Science Revised Syllabus for Class 9th

Unit No	Unit Marks	Marks	Periods
I	Matter – Its Nature and Behaviour	23	50
II	Organization in the Living World	20	45
III	Motion, Force and Work	27	60
IV	Our Environment	06	15
V	Food; Food Production	04	10
Total		80
Internal assessment		20
Grand Total		100

Download the official CBSE revised syllabus and curriculum PDF for 2020–21 to confirm topic lists and assessment rules (CBSE Academic). CBSE Academic

Also refer to your studies with School Connect Online for aligned study kits and practice tests. NextGen Learners

How to use this syllabus

This CBSE Class 9 Science syllabus is your roadmap for the year: it gives topic-level clarity, period allocation, internal-assessment structure and the list of practicals that are essential for scoring well. Use the syllabus to build a term-wise study plan, prioritize high-weight topics, and integrate NCERT textbook practice with targeted revisions. Official syllabus and NCERT textbooks are the primary authority you should follow while preparing. CBSE Academic

Theme: Materials (50 Periods)

Unit I: Matter-Nature and Behaviour

Unit I covers the fundamental properties of matter: states (solid, liquid, gas), characteristics such as shape, volume and density, and the classic state changes — melting, freezing, evaporation, condensation and sublimation. It introduces the nature of matter (elements, compounds, mixtures), and distinguishes homogeneous/heterogeneous mixes, colloids and suspensions.

Key conceptual topics:

• Particle model: atoms, molecules and the mole concept (mole ↔ mass ↔ Avogadro’s number).
• Atomic structure: electrons, protons, neutrons, valency, simple chemical formulae, isotopes and isobars.

Study tips:

• Build strong mental models with particle diagrams and labelled atom sketches.
• Practice mole conversions (mass ↔ moles ↔ particles) and atomic mass calculations.
• Solve NCERT exemplar problems for atoms–molecules and mole problems — they are frequently the source of long-form numerical questions. NCERT

Theme: The World of the Living (45 Periods)

Unit II: Organization in the Living World

This unit is the biology foundation: the cell as the basic unit of life (prokaryotes vs eukaryotes), cell organelles and their functions, tissues, organs and organ systems. It also covers biological diversity and basic taxonomy (major plant and animal groups) and an overview of health and disease — infectious vs non-infectious illnesses and their prevention.

High-impact study actions:

• Memorize organelle structure-function pairs (chloroplast → photosynthesis, mitochondria → respiration).
• Use diagrams (stained cell mounts, tissue slides) and label them repeatedly — diagram questions often score easy marks.
• Prepare concise tables summarizing salient features of major plant and animal groups; these are high-yield for quick revision.

Authoritative NCERT chapters map directly to this unit — align chapter practice with the syllabus list. NCERT

Theme: Moving Things, People and Ideas (60 Periods)

Unit III: Motion, Force and Work

Physics in Class 9 covers kinematics (distance, displacement, velocity, acceleration), Newton’s laws of motion, conservation ideas (momentum), gravitation (universal law, gravity and free fall), buoyancy (Archimedes’ principle) and an introduction to work, energy and power. Sound (nature, propagation, echo and SONAR) and simple human-ear structure are included.

How to prioritize:

• Master the equations of motion and graph interpretation (distance-time and velocity-time graphs). Many numerical and application questions use these.
• Understand Newton’s laws conceptually and practice derivation/verification style questions (force diagrams, action–reaction examples).
• Practice buoyancy and density problems with numerical computations — these often appear in application-based questions.

CBSE’s revised syllabus lists the expected depth and the weightage — follow it to allocate more revision time to Units I & III which carry heavier marks. CBSE Academic

Theme: Natural Resources: Balance in nature (15 Periods)

Unit IV: Our Environment

This short but important unit covers physical resources (air, water, soil), pollution basics (air, water, soil) and an introduction to large-scale environmental concepts like the ozone layer and bio-geochemical cycles (water, carbon, nitrogen, oxygen).

Exam strategy:

• Be ready with definitions, simple diagrams of cycles, and short-answer causes/effects of pollution.
• Keep real-world examples (local pollution issues, effects of ozone depletion) ready for higher-mark descriptive answers.

Theme: Food (10 Periods)

Unit V: Food Production

Unit V introduces plant/animal breeding, selection for quality, fertilizers & manures, pest/disease management and basics of organic farming. These are short chapters but ideal for scoring in short-answer sections by giving crisp, example-backed responses.

PRACTICALS (30 Periods)

Practicals are to be conducted alongside theory. The syllabus lists 15+ experiments ranging from preparing solutions, suspensions and colloids, separation techniques, reaction classification, microscope mounts, density and buoyancy experiments, to verification experiments such as laws of reflection of sound and conservation of mass. These practicals are an essential part of internal assessment and develop experimental skills tested during examinations. CBSE Academic

Practical preparation tips:

• Maintain a clean, labelled practical record book with aims, procedure, observations, calculations and conclusions.
• For viva/practical exams: rehearse common procedures and reasoning (why a solution is colloidal vs suspension; how to measure density using a spring balance).
• Record neat, fully-labelled diagrams for slides and specimens — these are often asked during practical exams.

How to convert this syllabus into a 12-month study plan

1. Map periods to weeks: Use the period allocation to estimate teaching time and divide topics into weekly study outcomes.
2. Prioritize by marks: Units I and III carry the highest marks — allocate more revision cycles to these.
3. Integrate theory + practicals: Schedule practicals adjacent to the related theoretical lessons to reinforce concepts.
4. Use NCERT + practice: NCERT text and exemplar problems should be your bedrock; add School Connect Online practice packs and past paper mocks to build application skills. NCERT

External links (recommended for students & teachers)

CBSE Academic — Revised Science Syllabus  (official PDF) — CBSE Academic

NCERT Class IX Science textbook (PDF / chapter-wise) — primary textbook aligned to CBSE concepts and diagrams. NCERT

Reference Links

• A dedicated “CBSE Class 9 Revised Syllabus” – NextGen Learners
• Class 9 Science Study Packs

Quick revision plan (last 6 weeks before exams)

• Weeks 1–2: Revise Units I & III (numericals + theory), do full NCERT exercises.
• Week 3: Revise Unit II (diagrams + diversity) and complete related practical write-ups.
• Week 4: Revise Units IV & V, environmental cycles and food production concepts.
• Week 5: Full-length mock test + correction and targeted rework on weak areas.
• Week 6: Light revision, formula sheet, diagrams, and final practical record check.

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