TN State Board · Class 8
Science Complete Guide
Syllabus, official resources, chapter guides, textbook solutions, question bank, model papers, revision plan, exam tips, and FAQs.
Chapters
23
Published Guides
60
Chapter Guides
23/23
Practice Resources
10
📝 Textbook Exercise Solutions — Chapter-wise
MCQ, short answers, long answers, and numericals with full worked solutions
Syllabus and Official Resources
Official-first3 syllabus focus areas with Tamil Nadu textbook resources as the primary source.
View sectionTextbook Exercise Solutions
PlannedChapter-wise MCQ, short answers, long answers, and numericals with worked solutions.
View sectionImportant Questions
Ready5 question patterns are listed for one-mark, short-answer, and long-answer practice.
View sectionExam Tips
Subject-specificExam guidance focuses on science presentation, keywords, time use, and common mistakes.
View sectionFAQs
In guidesFAQs are included inside individual guides so answers stay close to the exact chapter or resource.
View sectionSyllabus Roadmap
- Official Tamil Nadu Class 8 Science: physics, chemistry, biology, and computer applications from the current SCERT book.
- Covers 23 units from Measurement to Libre Office CALC.
- Includes definitions, diagrams, activities, exercise answers, important questions, and model paper practice.
Official Books
Use official Tamil Nadu textbook resources first, then study with KalviGavani chapter guides.
Open TN Textbook SourceChapter Dashboard
23/23 chapter guides published
Unit 1 · Physics · Chapter 1
Measurement
Unit 2 · Physics · Chapter 2
Force and Pressure
Unit 3 · Physics · Chapter 3
Light
Unit 4 · Physics · Chapter 4
Heat
Unit 5 · Physics · Chapter 5
Electricity
Unit 6 · Physics · Chapter 6
Sound
Unit 7 · Physics · Chapter 7
Magnetism
Unit 8 · Physics · Chapter 8
Universe and Space
Unit 9 · Chemistry · Chapter 9
Matter Around Us
Unit 10 · Chemistry · Chapter 10
Changes Around Us
Unit 11 · Chemistry · Chapter 11
Air
Unit 12 · Chemistry · Chapter 12
Atomic Structure
Unit 13 · Chemistry · Chapter 13
Water
Unit 14 · Chemistry · Chapter 14
Acids and Bases
Unit 15 · Chemistry · Chapter 15
Chemistry in Every Day Life
Unit 16 · Biology · Chapter 16
Microorganisms
Unit 17 · Biology · Chapter 17
Plant Kingdom
Unit 18 · Biology · Chapter 18
Organisation of Life
Unit 19 · Biology · Chapter 19
Movements in Animals
Unit 20 · Biology · Chapter 20
Reaching the Age of Adolescence
Unit 21 · Biology · Chapter 21
Crop Production and Management
Unit 22 · Biology · Chapter 22
Conservation of Plants and Animals
Unit 23 · Computer Science · Chapter 23
Libre Office CALC
Question Bank
- Definitions, units, and examples
- Activity observations and labelled diagrams
- Formula and reason questions
- Difference-between questions
- Computer and visual communication terms
Model Papers
- After each unit, solve a short unit test.
- After every major section, revise mistakes before moving to the next unit.
- In the final month, write one full subject model paper every week.
- Use the last revision cycle only for weak topics, formulae, diagrams, grammar rules, maps, or key terms.
Revision Plan
- Week 1: Read the official textbook and mark glossary, formulae, dates, rules, and diagrams.
- Week 2: Complete textbook exercises and correct repeated mistakes.
- Week 3: Practise important questions, unit tests, diagrams, maps, grammar, and writing formats.
- Week 4: Write model papers and revise only the mistake notebook.
Published Chapter Guides
chapter-guide
Tamil Nadu Class 8 Science: Atomic Structure
Samacheer Kalvi Class 8 Science Atomic Structure guide covering atoms, subatomic particles, Bohr model, and electronic configuration with important questions.
11 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Electricity
Samacheer Kalvi Class 8 Science Electricity guide covering current, voltage, resistance, Ohm's law, circuits, and heating effect with important questions.
11 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Force and Pressure
Samacheer Kalvi Class 8 Science Force and Pressure guide covering types of force, pressure, atmospheric pressure, and Archimedes' principle with important questions.
11 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Heat
Samacheer Kalvi Class 8 Science Heat guide covering heat vs temperature, thermal expansion, specific heat capacity, and modes of heat transfer with important questions.
11 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Light
Samacheer Kalvi Class 8 Science Light guide covering reflection, refraction, laws of reflection, mirrors and lenses with important questions and revision checklist.
11 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Matter Around Us
Samacheer Kalvi Class 8 Science Matter Around Us guide covering states of matter, properties, changes of state, and particle model with important questions.
11 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Microorganisms
Samacheer Kalvi Class 8 Science Microorganisms guide covering bacteria, viruses, fungi, useful and harmful microorganisms with important questions.
11 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Acids and Bases
Samacheer Kalvi Class 8 Science Acids and Bases guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Air
Samacheer Kalvi Class 8 Science Air guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Changes Around Us
Samacheer Kalvi Class 8 Science Changes Around Us guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Chemistry in Every Day Life
Samacheer Kalvi Class 8 Science Chemistry in Every Day Life guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Conservation of Plants and Animals
Samacheer Kalvi Class 8 Science Conservation of Plants and Animals guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Crop Production and Management
Samacheer Kalvi Class 8 Science Crop Production and Management guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Libre Office CALC
Samacheer Kalvi Class 8 Science Libre Office CALC guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Magnetism
Samacheer Kalvi Class 8 Science Magnetism guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Measurement
Samacheer Kalvi Class 8 Science Measurement guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Movements in Animals
Samacheer Kalvi Class 8 Science Movements in Animals guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Organisation of Life
Samacheer Kalvi Class 8 Science Organisation of Life guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Plant Kingdom
Samacheer Kalvi Class 8 Science Plant Kingdom guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Reaching the Age of Adolescence
Samacheer Kalvi Class 8 Science Reaching the Age of Adolescence guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Sound
Samacheer Kalvi Class 8 Science Sound guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Universe and Space
Samacheer Kalvi Class 8 Science Universe and Space guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
chapter-guide
Tamil Nadu Class 8 Science: Water
Samacheer Kalvi Class 8 Science Water guide with summary, textbook workflow, important questions, practice tasks, common mistakes, and revision checklist.
10 May 2026
Exercise Solutions
Chapter-wise textbook answers with a quick path back to notes.
Acids and Bases
Samacheer Kalvi 8th Science Acids and Bases exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Air
Samacheer Kalvi 8th Science Air exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Atomic Structure
Samacheer Kalvi 8th Science Atomic Structure exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Changes Around Us
Samacheer Kalvi 8th Science Changes Around Us exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Chemistry in Every Day Life
Samacheer Kalvi 8th Science Chemistry in Everyday Life exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Conservation of Plants and Animals
Samacheer Kalvi 8th Science Conservation of Plants and Animals exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Crop Production and Management
Samacheer Kalvi 8th Science Chapter 7 Crop Production and Management exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Electricity
Samacheer Kalvi 8th Science Electricity exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Force and Pressure
Samacheer Kalvi 8th Science Chapter 2 Force and Pressure exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Heat
Detailed Samacheer Kalvi 8th Science Heat exercise solutions — MCQs, true/false, fill-in-blanks, match, short & detailed answers with common mistakes and exam checklist.
12 June 2026
Libre Office CALC
Samacheer Kalvi 8th Science LibreOffice Calc exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Light
Samacheer Kalvi 8th Science Chapter 3 Light exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Magnetism
Samacheer Kalvi 8th Science Magnetism exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Matter Around Us
Samacheer Kalvi 8th Science Chapter 4 Matter Around Us exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Measurement
Samacheer Kalvi 8th Science Chapter 1 Measurement exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Microorganisms
Samacheer Kalvi 8th Science Chapter 6 Microorganisms exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Movements in Animals
Samacheer Kalvi 8th Science Chapter 5 Movements in Animals exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Organisation of Life
Samacheer Kalvi 8th Science Chapter 8 Organisation of Life exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Plant Kingdom
Samacheer Kalvi 8th Science Plant Kingdom exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Reaching the Age of Adolescence
Samacheer Kalvi 8th Science Reaching the Age of Adolescence exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Sound
Samacheer Kalvi 8th Science Sound exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Universe and Space
Samacheer Kalvi 8th Science Universe and Space exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Water
Samacheer Kalvi 8th Science Water exercise solutions with MCQs, fill in blanks, true or false, match the following, short and detailed answers, common mistakes, and exam checklist.
12 June 2026
Practice Resources
revision-plan
Tamil Nadu Class 8 Science 30-Day Revision Plan — Samacheer Kalvi
Day-by-day 30-day revision plan for Class 8 Science Tamil Nadu State Board covering all chapters across three terms.
11 May 2026
unit-test
Tamil Nadu Class 8 Science Biology Unit Test — Samacheer Kalvi
Class 8 Science Biology unit test for Tamil Nadu State Board covering Life Processes of Plants and Animals, Microorganisms, Reproduction, and Health and Hygiene.
11 May 2026
unit-test
Tamil Nadu Class 8 Science Chemistry Unit Test — Samacheer Kalvi
Class 8 Science Chemistry unit test for Tamil Nadu State Board covering Matter, Atomic Structure, Periodic Classification, Acids/Bases/Salts, and Carbon.
11 May 2026
model-paper
Tamil Nadu Class 8 Science Model Paper 1 — Samacheer Kalvi
Class 8 Science model paper 1 for Tamil Nadu State Board with section A, B, C questions in TN board pattern covering all terms.
11 May 2026
model-paper
Tamil Nadu Class 8 Science Model Paper 2 — Samacheer Kalvi
Class 8 Science model paper 2 for Tamil Nadu State Board with section A, B, C questions in TN board pattern covering all terms.
11 May 2026
unit-test
Tamil Nadu Class 8 Science Physics Unit Test — Samacheer Kalvi
Class 8 Science Physics unit test for Tamil Nadu State Board covering Measurements, Force and Pressure, Heat, Light, and Electricity.
11 May 2026
question-bank
Tamil Nadu Class 8 Science Question Bank — Samacheer Kalvi
Class 8 Science question bank for Tamil Nadu State Board with important 1-mark, 3-mark, and 5-mark questions across all chapters and terms.
11 May 2026
unit-test
Tamil Nadu Class 8 Science Term 1 Unit Test — Samacheer Kalvi
Class 8 Science term 1 unit test for Tamil Nadu State Board students with term-wise chapter checks, short tests, and correction checklist.
10 May 2026
unit-test
Tamil Nadu Class 8 Science Term 2 Unit Test — Samacheer Kalvi
Class 8 Science term 2 unit test for Tamil Nadu State Board students with term-wise chapter checks, short tests, and correction checklist.
10 May 2026
unit-test
Tamil Nadu Class 8 Science Term 3 Unit Test — Samacheer Kalvi
Class 8 Science term 3 unit test for Tamil Nadu State Board students with term-wise chapter checks, short tests, and correction checklist.
10 May 2026
