Science (Physics, Chemistry, Biology) — Syllabus & Chapters

The complete syllabus for Science (Physics, Chemistry, Biology) — every chapter you need to study, and how the exam paper is structured.

What you will study (chapters)

Chapter 1: Measurement
Chapter 2: Motion
Chapter 3: Sound
Chapter 4: Heat
Chapter 5: Light: The Basic Idea of Shadow
Chapter 6: Reflection of Light: Plane Mirrors
Chapter 7: Reflection of Light: Spherical Mirrors
Chapter 8: Electricity
Chapter 9: Elements and Compounds: Atoms and Molecules
Chapter 10: Structure of an Atom
Chapter 11: Physical and Chemical Changes: Chemical Equation
Chapter 12: Air and Its Constituents
Chapter 13: Water
Chapter 14: Acids, Bases, and Salts
Chapter 15: Chemistry in Our Life
Chapter 16: Wastes
Chapter 17: Cell: The Structural and Functional Unit of Life
Chapter 18: Organisation in Living Things
Chapter 19: Movement in Animals and Plants
Chapter 20: Nutrition in Animals and Plants
Chapter 21: Ingestion, Digestion, Absorption, and Assimilation
Chapter 22: Respiration and Transpiration
Chapter 23: Excretion in Animals and Plants
Chapter 24: Increasing Population and Its Impact on the Environment
Chapter 25: Life Under a Microscope

Frequently asked questions

How many chapters are there in Science (Physics, Chemistry, Biology)?

The Science (Physics, Chemistry, Biology) syllabus has 25 chapters, listed in full above. Cover the high-weightage chapters first using the exam pattern as a guide.

How do I know which Science (Physics, Chemistry, Biology) chapters carry the most marks?

Compare the chapter list above with the exam pattern and the last few years of question papers — the topics that appear most often and the units with the highest marks are where to focus first. Always confirm weightage against the official syllabus for your exam year.

Has the Science (Physics, Chemistry, Biology) syllabus changed this year?

Boards occasionally revise the syllabus or remove topics for a session. Always download the official syllabus for your exact exam year from the official ICSE & ISC portal rather than relying on an older copy or a social-media list.

How can I prepare for Science (Physics, Chemistry, Biology) faster?

Begin with the most-frequently-asked topics and the last few years of question papers, then test yourself under timed conditions. If you want guided help, you can use the free AI study tutor for Science (Physics, Chemistry, Biology) — practise past-paper questions and get instant feedback — or a focused Science (Physics, Chemistry, Biology) study guide that condenses the syllabus into the topics that matter most — both are free to start.