Science is one of the most important subjects in the ICSE board Class 10 exams. Not only does it create a solid background to further studies, but is also decisive in determining the career choices of a student in engineering, medicine, research, and other scientific disciplines. The subject of Science is broken down into three parts among the ICSE students: Physics, Chemistry, and Biology. Every section has significant chapters, key points, and a package of practical experiments that students have to learn to achieve a good score.
This blog will discuss the most significant chapters and experiments of ICSE Class 10 Science, the importance of a systematic study, and how the reference material such as the ICSE class 10 question bank, 10 years ICSE class 10 solved papers, and other books on ICSE class 10 2026, can assist students to give their best in the board exams.
Why is Science Class 10 Important?
The syllabus of the ICSE Science is well structured to evolve conceptual clarity and application-based understanding. The attention is not paid only to theory but to practical knowledge as well. The experiments included make sure that students learn to think scientifically, logically, and analytically.
The students who are about to appear in Class 10 Science with ICSE examination find the subject to be vast, but after adopting the right strategy and focusing on the important chapters, it becomes easy. That is why most toppers and teachers advise to practice using a good question bank of ICSE class 10, refer to 10 years ICSE class 10 solved papers and go through the best book of ICSE class 10 to learn both theory and practical.
Subject-Wise Important Chapters in ICSE Class 10 Science
Let us now divide the syllabus into Physics, Chemistry, and Biology to identify the most important chapters for board exams.
Subject-Wise Important Chapters in ICSE Class 10 Science
Subject |
Important Chapters |
Why It’s Important |
Physics |
Force, Work, Power & Energy, Refraction of Light, Electricity & Household Circuits, Modern Physics |
Core concepts with numerical applications; frequently asked in exams. |
Chemistry |
Periodic Table, Chemical Bonding, Acids-Bases-Salts, Electrolysis, Organic Chemistry (Alcohols, Alkanes, Alkenes) |
High weightage chapters; experiments and equations are exam favorites. |
Biology |
Cell Division, Photosynthesis, Respiration, Genetics, Human Anatomy (Digestive, Respiratory, Nervous system) |
Essential for conceptual clarity and forms the base for higher studies in biology. |
Important Experiments in ICSE Class 10 Science
Practical knowledge carries weight in ICSE exams, as students are evaluated on experiments and their ability to apply theory in real-life situations. Students are expected to not only perform experiments but also write observations, draw diagrams, and explain the principles behind them.
Subject |
Experiment |
Key Learning Outcome |
Physics |
Verification of Ohm’s Law, Focal Length of a Convex Lens, Laws of Reflection and Refraction |
Understanding of light and electricity principles with practical applications. |
Chemistry |
Action of acids on metals, Electrolysis of copper sulphate solution, Properties of acids and bases |
Tests chemical reactivity, electrochemistry, and basic properties of compounds. |
Biology |
Stomatal experiment using leaf peel, Demonstration of photosynthesis using starch test, Study of human blood cells |
Develops biological observation skills and connection between theory and life. |
How to Approach Important Chapters in ICSE Class 10 Science?
Students always question themselves as to whether they should concentrate more on theory or numericals. The right way to do it is to strike a balance between the two. To give an example, chapters in Physics, such as work, power, and energy, cannot be complete without numerical exercises. Meanwhile, Chemistry concepts like Periodic Properties require a good knowledge of definitions and trends.
Read More: Is It Possible to Score 100 Percent in Class 10 ICSE?
What are the best chapters in ICSE Class 10 Physics?
ICSE Physics chapters with the highest scoring are Force, Refraction of Light, Electricity, and Work, Power & Energy. These chapters are a mix of theory and numericals so they are important in exams. It is suggested that students solve numerical problems in these chapters using an ICSE class 10 question bank and refer to solutions in 10 years ICSE class 10 solved papers to be accurate in the exam.
Are experiments really important in ICSE Class 10 Science?
Experiments are essential to ICSE Science. They are tested in practical exams, and they are also the foundation of theory questions in board papers. As an example, in Biology, there is the starch test to check photosynthesis, and this is normally indirectly asked in exams. Likewise, the Ohm's law verification in Physics is an obligatory exercise. Reading the best book on class 10 ICSE can guide the students in the step-by-step process of these experiments.
How do solved papers help in ICSE Class 10 Science preparation?
Using 10 years ICSE class 10 solved papers provides a clear idea of the weightage of topics, frequently asked questions, and the level of difficulty. Many ICSE toppers have highlighted that practicing these papers regularly boosts confidence and helps in time management during the exam.
Marks Distribution of ICSE Class 10 Science
Understanding the weightage of topics helps students prioritize their studies.
Subject |
Major Topics for High Marks |
Approx. Weightage |
Physics |
Force, Refraction, Work-Energy, Household Circuits |
25–30 marks |
Chemistry |
Periodic Table, Bonding, Electrolysis, Organic Chemistry |
25–30 marks |
Biology |
Photosynthesis, Cell Division, Genetics, Human Anatomy |
25–30 marks |
This shows that each subject contributes almost equally, so ignoring one stream can reduce overall performance. Balanced preparation is the key.
Role of Practice Materials in Science Preparation
Students tend to mix up several resources when they are preparing. The best way is to begin with the NCERT/ICSE prescribed material and then reinforce the practice with other sources. ICSE class 10 question bank facilitates practice in chapters, whereas 10 years ICSE class 10 solved papers give exposure to the exam. Students studying books to appear in class 10 ICSE 2026 need to revise all the subjects properly before the exams.
To prepare in the end, most students use the best book in class 10 ICSE that consists of theory, exercises, sample papers, and experiments all in one book. This makes the syllabus be covered in 360 degrees.
How to Study Experiments for ICSE Class 10?
A common student question is: How do we study experiments?
The solution is in three steps:
1. Know the theory of the experiment: As an example, before conducting the Ohm s law experiment, there is a need to know the relationship between the current, voltage, and resistance.
2. Learn to write observations in your own style-finding your own style. In exams, it is not only accuracy that counts but presentation as well.
3. Write answers to the diagrams as they bear a lot of marks in the practical part.
Studying with the ICSE class 10 question bank aids students in the anticipated experiment questions. A reference to 10 years ICSE class 10 solved papers also demonstrates how experiment-based questions are set in theory papers.
Is Science difficult in ICSE Class 10?
Science can be challenging because of its vast syllabus, but with the right strategy and continuous practice, it becomes scoring. Students should rely on structured study, including regular revision and solving practice questions from the best book for class 10 ICSE.
Which book is best for last-minute Science revision?
For last-minute revision, students should use resources like a ICSE class 10 question bank and 10 years ICSE class 10 solved papers, as they provide concise chapter-wise questions and past exam patterns. These are more effective than starting new material close to exams.
How much time should be given daily to Science?
Ideally, students should dedicate at least 1.5–2 hours daily to Science, balancing all three subjects. Chapters like Electrolysis or Refraction demand extra practice, while Biology requires more revision of diagrams and processes.
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Conclusion
ICSE Class 10 Science is not only about memorizing facts but about understanding concepts and applying them in practical situations. Chapters like Work and Energy, Periodic Table, and Photosynthesis demand special attention because of their high weightage in exams. Similarly, experiments such as verification of Ohm’s Law, photosynthesis starch test, and electrolysis of copper sulphate solution are vital for practical knowledge and board evaluations.
The right approach to preparation includes continuous practice, using resources such as a ICSE class 10 question bank, revising with 10 years ICSE class 10 solved papers, and referring to books for class 10 ICSE 2026 for a complete preparation plan. Above all, students should choose the best book for class 10 ICSE to ensure clarity, accuracy, and confidence. With balanced effort in Physics, Chemistry, and Biology, success in ICSE Science becomes an achievable goal.