The NCERT science textbook for class 7 is titled Curiosity — 12 chapters across 188 pages — and the official PDF for every chapter is linked on this page. Before you download, this page tells you what each chapter actually contains, so you are not opening files blind.
What this page adds beyond the PDF is a per-chapter count of named sections, verified numbered figures and hands-on activities, measured from the book itself. You can see at a glance which chapters are diagram-heavy, which are activity-heavy, and where the numerical work sits — before you open a single file.
Download the official Class 7 Science chapters (PDF)
All 12 files in the table below are NCERT’s own PDFs, hosted on ncert.nic.in — the same source your school uses. Chapter 1, The Ever-Evolving World of Science, opens directly from the official NCERT PDF, and the other chapters follow the same pattern.
| Ch. | Chapter | Pages | Official PDF |
|---|---|---|---|
| 1 | The Ever-Evolving World of Science | 6 | |
| 2 | Exploring | 16 | |
| 3 | Electricity: Circuits and their Components | 18 | |
| 4 | The World of Metals | 16 | |
| 5 | Changes Around Us: Physical and Chemical | 16 | |
| 6 | Adolescence: A Stage of Growth and Change | 16 | |
| 7 | Heat Transfer | 16 | |
| 8 | Measurement of | 16 | |
| 9 | Life Processes | 16 | |
| 10 | Life Processes in Plants | 16 | |
| 11 | Light: Shadows and Reflections | 16 | |
| 12 | Earth, Moon, and the Sun | 20 |
The science NCERT Class 7 PDF at a glance: 12 chapters, 188 pages
- 12 chapters, each with its official PDF linked in the table above.
- 188 printed pages across the whole book.
- 94 named sections — NCERT’s own numbered headings inside the chapters.
- 125 verified numbered figures indexed from the textbook, 17 of them in each of Chapters 7 and 9.
- 24 hands-on activities spread across the chapters, with Chapter 11 carrying the most (5).
- Chapter study pages for all 12 chapters are shown in the status block below.
These counts come from the NCERT textbook entries this page indexes, not from the wider CBSE scheme — the per-chapter numbers are all in the directory below.
What’s inside each chapter of the Class 7 Science book
| Ch. | Chapter | Sections | Activities | Figures | Questions |
|---|---|---|---|---|---|
| 1 | The Ever-Evolving World of Science | 1 | — | — | — |
| 2 | Exploring | 6 | 2 | 12 | — |
| 3 | Electricity: Circuits and their Components | 10 | 1 | 10 | — |
| 4 | The World of Metals | 10 | 3 | 6 | — |
| 5 | Changes Around Us: Physical and Chemical | 11 | 3 | 10 | — |
| 6 | Adolescence: A Stage of Growth and Change | 10 | — | 5 | — |
| 7 | Heat Transfer | 6 | 3 | 17 | — |
| 8 | Measurement of | 7 | — | 6 | — |
| 9 | Life Processes | 6 | 2 | 17 | — |
| 10 | Life Processes in Plants | 10 | 1 | 12 | — |
| 11 | Light: Shadows and Reflections | 10 | 5 | 14 | — |
| 12 | Earth, Moon, and the Sun | 7 | 4 | 16 | — |
The directory above counts four things for each chapter. A section is one of NCERT’s own numbered headings; a figure is a numbered figure indexed from the book; an activity is a hands-on experiment or task the chapter sets.
The questions column would list end-of-chapter exercises — this edition prints no end-of-chapter exercise block, because the practice lives inside the chapters as activities. Comparing those columns tells you a chapter’s real character before you read a word of it.
Chapter 1: The Ever-Evolving World of Science (pp. 1-6)
The opening chapter introduces science as a way of seeing and questioning the world, and at 6 pages it is the shortest chapter in the book — a reading chapter with no figures and no activities that sets the tone for the activity-led chapters to come.
Chapter 2: Exploring (pp. 7-22)
Exploring introduces acids, bases and indicators — litmus, red rose and turmeric are all tested as indicators (pp. 8-14) — then applies neutralisation to everyday situations such as ant stings and soil treatment (pp. 17-18).
Chapter 3: Electricity: Circuits and their Components (pp. 23-40)
Electricity builds from a torch to a working circuit — electric cell, battery, lamp, switch and circuit symbols — then separates conductors from insulators using a conduction tester.
Chapter 4: The World of Metals (pp. 41-56)
The World of Metals names the properties that make a material a metal — malleability, ductility, sonority, and the conduction of heat and electricity — then contrasts how metals and non-metals behave in air and water, including the rusting of iron.
Chapter 5: Changes Around Us: Physical and Chemical (pp. 57-72)
Changes Around Us separates physical change from chemical change using everyday examples — paper, melting, rusting and burning — and asks whether both kinds of change can occur in the same process, using a candle flame as the test case.
Chapter 6: Adolescence: A Stage of Growth and Change (pp. 73-88)
Adolescence is the book’s most discussion-based chapter, covering the physical, emotional and behavioural changes of the teenage years and then the habits — nutrition, personal hygiene, physical activity, a balanced social life, and saying no to harmful substances — that make the stage manageable.
The directory shows it is the only chapter with zero activities and just five figures: a read-and-talk chapter, not a lab chapter.
Chapter 7: Heat Transfer (pp. 89-104)
Heat Transfer explains the three ways heat moves — conduction, convection and radiation — then follows the consequences: land and sea breezes, the water cycle, and water seeping beneath the Earth. With 17 indexed figures, joint most in the book, this is a chapter to learn by labelling diagrams.
Chapter 8: Measurement of (pp. 105-120)
The indexed title is exactly “Measurement of” — in scope this is the measurement of time and motion, from water clocks and pendulum clocks to the SI unit of time, then speed as distance divided by time, with uniform and non-uniform motion compared on a straight track. Chapter 8 holds the book’s numerical work: the speed relationship is set out on p. 115.
Chapter 9: Life Processes (pp. 121-136)
Life Processes follows food and air through the animal body — digestion from mouth to small intestine, with ruminants and birds as the comparison cases — then respiration and gas exchange at the alveoli. Its 17 indexed figures, joint most in the book, are the digestive and respiratory diagrams to label.
Chapter 10: Life Processes in Plants (pp. 137-152)
Life Processes in Plants is built around photosynthesis — the starch test on a leaf, the role of chlorophyll and air, and the release of oxygen — and then covers the transport of water, minerals and food and whether plants respire.
Chapter 11: Light: Shadows and Reflections (pp. 153-168)
Light starts from natural and artificial sources of light, shows that light travels in a straight line through transparent, translucent and opaque materials, and ends by explaining shadows and plane-mirror images — with builds of a pinhole camera, a periscope and a kaleidoscope. At five activities, it is the most activity-heavy chapter in the book.
Chapter 12: Earth, Moon, and the Sun (pp. 169-188)
Earth, Moon, and the Sun is the longest chapter in the book (20 pages) and ties the Earth’s rotation to day and night, its revolution to the changing night sky and the seasons, and the alignment of the Sun, Earth and Moon to solar and lunar eclipses.
Chapter study pages for Class 7 Science
The block below shows which chapters of this book already have a full study page on this site, and which are planned.
How to use the NCERT Class 7 Science book PDF
This book teaches by doing, so the study order below follows its character — diagram chapters first if that is your weak spot, builds before circuits, and the activities as your revision checkpoints.
| Chapter type | Chapters | How to study it |
|---|---|---|
| Diagram-heavy | 7 Heat Transfer, 9 Life Processes (17 figures each) | Learn by labelling the diagrams and naming the parts. |
| Build-it | 3 Electricity (torch circuit), 11 Light (pinhole camera, periscope, kaleidoscope) | Do the builds; making them teaches the concept. |
| Discussion-based | 1 The Ever-Evolving World of Science, 6 Adolescence | Read and talk it through; there are no activities to run. |
| Numerical | 8 Measurement of | Practise the speed relationship \( \text{Speed} = \frac{\text{Distance}}{\text{Time}} \) (p. 115). |
| Experiment-led | 2 Exploring, 4 The World of Metals, 5 Changes Around Us, 10 Life Processes in Plants, 12 Earth, Moon, and the Sun | Run the activities; they are the chapter’s practice. |
Suggested order of work. If diagrams are your weak spot, label the two 17-figure chapters (7 and 9) first. Do the Chapter 11 builds before Chapter 3’s torch circuit — shadow and reflection ideas make the circuit diagram easier to read. Then treat the book’s 24 activities as revision checkpoints rather than optional extras, because this edition carries little end-of-chapter exercise work.
The mistake this book sets up. Chapter 5 uses one candle flame to separate the two kinds of change: the melting wax is a physical change, while the burning wick is a chemical change — both happen in the same process (pp. 64-65).
Syllabus note. Textbook contents and the examinable syllabus are not always identical — check the current official CBSE syllabus before deciding what to revise. And if you are working from an older Class 7 Science book, match by topic rather than chapter number: acids-bases ideas, for example, now sit in Chapter 2, Exploring.
How to choose: the NCERT Science book for Class 7 in Hindi
Every PDF linked on this page is the official English edition of the Class 7 Science textbook. NCERT also publishes the same book in Hindi and other scheduled Indian languages, and the same ncert.nic.in textbook portal hosts those files.
Chapter titles can differ between language editions, so use the per-chapter notes above to match by topic rather than by chapter number.
- For the Hindi edition, open the NCERT textbook portal, choose Class 7, and select the Hindi version of Science from the language options on that page — do not guess a filename.
Other NCERT books for Class 7 on this site
- Books root: the full NCERT books directory — every class and subject this site covers.
- Class 7 hub: all books for this class, including the other subjects as their pages publish.
- Class 7 Science study pages: chapter-by-chapter walkthroughs built from this book.
Sources and data verification
This listing is maintained for the 2026-27 academic session using the NCERT textbook information available to us. NCERT remains the authority for confirming the latest edition.
- The figures and counts on this page describe the official NCERT Class 7 Science textbook (Curiosity), official edition on ncert.nic.in.
- This page covers the English edition of that book — 12 chapters — and not other language editions or other subjects.
- This listing is maintained for the current session against the NCERT edition currently published on ncert.nic.in.
- NCERT settles textbooks, editions and PDFs; CBSE settles curriculum, syllabus and examinations. For a textbook edition, NCERT is the authority — not CBSE.
Reference: NCERT Class 7 Science textbook, official edition on ncert.nic.in. Figure captions and section titles quoted from the textbook; page references are to the official PDF.
Frequently asked questions about the Class 7 Science textbook
How many chapters are in the Class 7 Science textbook?
12 chapters across 188 pages, from The Ever-Evolving World of Science to Earth, Moon, and the Sun. The download table above lists every chapter with its official PDF link.
Is the Class 7 Science book PDF free and official?
Yes. All 12 files are NCERT’s own, hosted on ncert.nic.in and linked in the download table above — no login, no payment. They are the same files your school uses.
Which chapter covers acids, bases and indicators?
Chapter 2, Exploring (pp. 7-22). Litmus, red rose and turmeric are all tested as indicators (pp. 8-14), and neutralisation is applied to ant stings and acidic soil (pp. 17-18).
Which chapter explains photosynthesis?
Chapter 10, Life Processes in Plants (pp. 137-152). It covers the starch test on a leaf, the role of chlorophyll and air, and transport in plants (pp. 140-148).
Where are the answers to the chapter activities?
In this edition the practice sits inside each chapter as hands-on activities — 24 across the book — so redoing them is the revision. The chapter study pages linked in the status block walk through each activity as those pages are published.