NCERT Class 9 Science Notes - Download Chapter-wise PDFs

Details of Chapter Notes for CBSE Class 9 Science

The notes are a very important resource that includes all the important topics and concepts in an easy and understandable manner, along with the required diagrams and formulas, which are required by the students for thorough preparation in less time. Given below are the summaries of each chapter, including the topics present in each chapter.

NCERT Notes Class 9 Science Chapter 1: Matter in Our Surroundings

This chapter includes a detailed knowledge of the matter that is present all around us. Its different forms, such as solid, liquid, and gas, their characteristics, and comparison are explained very clearly and in easy language. It also highlights how these different forms of matter change their state from one form to another, like solid to liquid, liquid to gas, and vice versa, along with certain examples to make this concept stick for a longer time. The effects of temperature, pressure on these different states of matter are covered in this chapter.

NCERT Notes Class 9 Science Chapter 2: Is Matter Around Us Pure?

Chapter 2 notes provide the concept that every matter present around is pure or not. It includes the explanations of different terminologies like mixture, colloids, suspension, and solutions, their characteristics, and what are the differences between them that make their features unique. Separating the components of a mixture that includes various processes such as sublimation, chromatography, distillation, etc., is explained in a very understandable manner in these notes, along with the diagrams provided by our subject experts.

NCERT Notes Class 9 Science Chapter 3: Atoms and Molecules

It covers all the information on the structure and behaviour of atoms and molecules, which helps students to understand the chemical reactions, the composition of materials, as well as the biological processes. These notes provide a clear and detailed understanding of these fundamental topics. Concepts like the laws of chemical equations, atomic mass, molecular mass, and chemical formulas are well explained. It also covered the steps of how to write a chemical formula correctly, along with an example, which will help students in the exam a lot.

NCERT Notes Class 9 Science Chapter 4: Structure of the Atom

These notes highlight the components by which an atom is formed, which is proven by several scientists like Thomson, Rutherford, and Bohr's model of an atom. The features of all these experiments are provided in a very understandable manner in points, along with required diagrams. This chapter also covered the concepts of the valence electrons and how electrons revolve around the nucleus, along with the definitions of isotopes and isobars, which can easily be grasped by the students with their examples provided here.

NCERT Notes Class 9 Science Chapter 5: The Fundamental Unit of Life

This chapter introduces students to cells, the basic structural and functional units of life. It explains the discovery of the cell, the cell theory, and the different types of cells. Students also learn about various cell organelles and their functions, including the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus, along with their diagrams from these notes prepared by our subject experts. It also covers important topics such as the plasma membrane and its functions, diffusion and osmosis, and the differences between plant and animal cells.

NCERT Notes Class 9 Science Chapter 6: Tissues

It highlights the difference between unicellular and multicellular organisms and why multicellular organisms require specialised tissues. Students learn about the two main types of tissues, plant tissues and animal tissues, along with their structure, functions, and types, with the help of diagrams. These notes cover important topics such as meristematic and permanent tissues in plants, including parenchyma, collenchyma, and sclerenchyma, as well as epidermis and vascular tissues (xylem and phloem). Different types of animal tissues, including epithelial, connective, muscular, and nervous tissues, and their roles in the body are also included for quick revision.

NCERT Notes Class 9 Science Chapter 7: Motion

Concepts like Uniform and Non-Uniform motion, their differences, along with real-life examples, are well-explained in these notes. Terms like speed, velocity, and acceleration are given with their formulas, which are required by the students to solve numerical problems in the exam. This chapter covers the first, second, and third equations of motion in a very understandable manner, provided by our subject experts. Different graphical representations of the motion, which are important from an exam point of view, are covered in these notes, which help students to grasp the concepts easily.

NCERT Notes Class 9 Science Chapter 8: Force and Laws of Motion

This chapter includes all the topics of force and the laws of motion. It explains important terms like force, inertia, momentum, and mass in simple words, making them easy to understand for students. Newton’s three laws of motion are described with everyday examples so students can relate them to real life by our subject experts. There are also well-detailed explanations of how to apply formulas to solve problems.

NCERT Notes Class 9 Science Chapter 9: Gravitation

The notes on Gravitation help students understand how objects attract each other with a force called gravity, both on Earth and in space. Important topics like the universal law of gravitation, mass, and weight are explained using simple language and examples. The concept of pressure in liquids and the role of buoyancy are also clearly discussed to help students grasp all these real-life applications. Key formulas and definitions are provided, and diagrams are also included to make the learning process easier.

NCERT Notes Class 9 Science Chapter 10: Work and Energy

It covers the concept that how work is done and how energy is used and transformed in various forms in different situations. All the key terms related to work and energy, such as work, power, kinetic energy, and potential energy, are explained easily and understandably. Along with this, important formulas and their applications are covered, helping students solve numerical problems confidently. The law of conservation of energy is also explained in simple points to make the concept clear for students.

NCERT Notes Class 9 Science Chapter 11: Sound

The notes include the concept that how sound propagates in the atmosphere and how it reaches our ears. All the different and difficult terms related to sound, such as pitch, quality, amplitude, etc, are designed in a way that’s easy to grasp, along with diagrams for better retention. Apart from this, the structure of the human ear is well-explained in points along with a well-labelled diagram, as it is an important topic from this chapter.

NCERT Notes Class 9 Science Chapter 12: Improvement in Food Resources

This chapter focuses on the methods that improve agricultural productivity and ensure food security. It covers crop improvement, crop variety improvement, nutrient management, irrigation techniques, and different cropping patterns. The notes also include animal husbandry, which includes cattle farming, poultry farming, etc, in a clear and simple style. Understanding these concepts helps in sustainable agriculture and efficient food production.

Also, check the NCERT Books and the NCERT Syllabus here:

• NCERT Books Class 9 Science
• NCERT Syllabus Class 9 Science
• NCERT Books Class 9
• NCERT Syllabus Class 9