NCERT Solutions Class 9 Science: Chapter-Wise Details

SimplyAcad has brought the NCERT Solutions Class 9 Science to assist students learn various concepts and theories discussed in the syllabus. Our subject-matter experts have created the best NCERT solutions that focus on developing and strengthening the basics, so they have no room for confusion and doubts. Students can use the solutions to prepare their own notes for quick last-minute revisions.  

NCERT Solutions Class 9 Science Chapter-Wise 2024-25

Students can scroll below to access the chapter-wise solutions provided in the table below:

CHAPTERS

Chapter 1 MATTER IN OUR SURROUNDINGS

Chapter 2 IS MATTER AROUND US PURE?

Chapter 3 ATOMS AND MOLECULES

Chapter 4 STRUCTURE OF THE ATOM

Chapter 5 THE FUNDAMENTAL UNIT OF LIFE

Chapter 6 TISSUES

Chapter 7 MOTION

Chapter 8 FORCE AND LAWS OF MOTION

Chapter 9 GRAVITATION

Chapter 10 WORK AND ENERGY

Chapter 11 SOUND

Chapter 12 IMPROVEMENT IN FOOD RESOURCES

 

Overview of the NCERT Class 9 Chapters Science 2024-25

Chapter 1: Matter in Our Surrounding

Matter in Our Surrounding is the first chapter of the ncert class 9 science. The chapter defines matter as something which occupies space and has mass. It discusses how the Indian philosophers have classified matter into different elements as Panch Tatva, comprising air, water, sky, fire and earth. However, modern scientists classify matter into two types such as physical and chemical properties. The main topics discussed in the chapters are:

• Definition of matter
• Solid, Liquid and Gas
• Characteristics – Shape, Volume, Density
• Change of state –  Melting, Freezing, Evaporation, Condensation, Sublimation.

Chapter 2: Is Matter Around Us Pure?

The second chapter of the ncert class 9 science book, Is Matter Around Us Pure, helps students learn about mixtures, solutions, and its properties, separation of mixtures followed by physical and chemical changes. Students also gain insights on Compounds and its properties, the difference between a compound and a mixture, etc. Let’s see what topics are some important topics covered:

• Nature of matter: Elements, compounds and mixtures
• Heterogeneous Mixtures
• Homogeneous Mixtures
• Colloids and Suspensions
• Physical and Chemical changes

Chapter 3: Atoms and Molecules

Atoms and Molecules is the third chapter of the ncert class 9 science which deals with laws of chemical combination, atoms, molecules, etc. Students will learn to write chemical formulas, molecular mass and mole concepts. Some important topics covered here are:

• Particle nature and their basic units: Atoms and molecules 
• Law of Chemical Combination
• Chemical formula of common compounds
• Atomic and molecular masses

Chapter 4: Structure of the Atom

Chapter 4 of the ncert class 9 science studies the structure of atoms, through various atomic models contributed by scientists around the world. The chapters talk about electrons, and its distribution in different orbits. Students will learn to calculate the valency, mass and atomic number. Here are some of the important topics covered:

• Structure of Atoms: Electrons, Protons and Neutrons
• Valency 
• Atomic Number
• Mass Number
• Isotopes and Isobars

Chapter 5: The Fundamental Unit of Life

The Fundamental Unit of Life is the fifth chapter of the ncert class 9 science exploring cell in length. The chapter is related to biology and mainly deals with the cell structure, organisation, plasma membrane, cell wall, cytoplasm  and structure of an animal cell. Some of the important topics covered in this chapter are:

• Cell as a basic unit of life
• Prokaryotic and Eukaryotic Cells 
• Multicellular Organisms
• Cell membrane and Cell wall
• Cell organelles and Cell inclusions
• Chloroplast
• Mitochondria 
• Vacuoles
• Endoplasmic reticulum 
• Golgi apparatus
• Nucleus
• Chromosomes: basic structure, and number

Chapter 6: Tissues

The sixth chapter of the ncert class 9 science revolves around tissues. The chapters focus on  discussing the definition of tissues and its different types: plant and animal tissues. Some of the important topics covered here are: 

• Tissues
• Organs and Organ System
• Organism: Structure and functions of animal and plant tissues

Chapter 7: Motion

Motion is the seventh chapter in the ncert class 9 science book revolving around the concepts of motions, speed and direction. Students will learn about graphical representation of motion, and solve numericals related to it. Some of the important topics are:

• Distance and displacement
• Velocity
• Uniform and non-uniform motion along a straight line
• Acceleration
• Distance-time and velocity-time graphs for both uniform motion and uniformly accelerated motion,
• Elementary idea of uniform circular motion.

Chapter 8: Force and Law of Motion

Force and Law of Motion is an extremely important chapter of the class 9 science syllabus and revolves around the three laws of motion. Students will learn about them with proper illustrated diagrams provided in the chapter. Some of the important topics covered are:

• Force and Newton’s laws: Force and Motion
• Newton’s Laws of Motion 
• Action and Reaction forces
• Inertia of a body
• Inertia and mass
• Momentum
• Force
• Acceleration

Chapter 9: Gravitation

Gravitation is the ninth chapter of the ncert class 9 science syllabus, which discusses the universal law of gravitation and its related concepts. The chapter talks about the importance of gravitation, free fall, mass, thrust and pressure. It also presents the principles of Archimedes and relative density. Let’s look at some of the topics covered in the chapters: 

• Gravitation
• Universal Law of Gravitation 
• Force of Gravitation of the earth (gravity)
• Acceleration due to Gravity 
• Mass and Weight
• Free fall
• Floatation: Thrust and Pressure 
• Archimedes’ Principle
• Buoyancy

Chapter 10: Work and Energy

Work and Energy is the tenth chapter in the list, which focuses on the concept of energy and its different forms. The chapter comprises various numerical problems for students to learn the formulas and ideas related to the topic. Some important sections in the chapter are as follows:

• Work
• Energy and Power: Work done by a Force
• Kinetic and Potential energy
• Law of conservation of energy

Chapter 11: Sound

Sound is an essential chapter of the ncert class 9 syllabus, the chapter is related to physics. Students will learn about different concepts such as production of sound, propagation of sound, range of hearing, reflection of sound and human ear. These are important topics covered in the chapter:

• Sound 
• Nature of sound and its propagation in various media
• Speed of sound
• Range of hearing in humans
• Ultrasound
• Reflection of sound
• Echo

Chapter 12: Improvement in Food Resources

Improvement in Food Resources is the twelfth chapter of the ncert class 9 science, focusing on concepts related to improving the production of food resources to meet the requirements.

Some main highlights of the chapter are as follows:

• Crop yields
• Manure and Fertiliser
• Storage of grains
• Animal husbandry
• Agriculture, Farming and Dairy

CBSE Class 9 Science Chapter-wise Mark Distribution 2024-25

Chapter. No	Chapter Name	Marks
1	Matter in our Surroundings	25
2	Is Matter around us Pure?
3	Atoms and Molecules
4	Structure of Atoms
5	The Fundamental unit of Life	22
6	Tissues
7	Motion	27
8	Force and Laws of Motion
9	Gravitation
10	Work and Energy
11	Sound
12	Improvement in Food Resources	6
	Total	80