Class 9 Science Notes

Chapters in Class 9 Science

1. Chapter 1: Matter in Our Surroundings

   16 topics

   • Introduction of Matter in Our Surroundings
   • Physical Nature of Matter: Matter is Made Up of Particles
   • How Small Are These Particles of Matter?
   • Characteristics of Particles of Matter: Particles of Matter Have Space Between Them
   • Particles of Matter Are Continuously Moving
   • Particles of Matter Attract Each Other
   • States of Matter
   • The Solid State

2. Chapter 2: Is matter around us pure?

   12 topics

   • Introduction of is matter around us pure?
   • What is a Mixture?
   • Types of Mixtures
   • What is a Solution?
   • concentration of a solution
   • What is a Suspension?
   • What is a Colloidal Solution?
   • Here is the table of Common examples of colloids

3. Chapter 3: Atoms and Molecules

   16 topics

   • Introduction to Atoms and Molecules
   • Laws of Chemical Combination
   • Law of Conservation of Mass
   • Law of Constant Proportions
   • What is an Atom?
   • What are the Modern Day Symbols of Atoms of Different Elements
   • Atomic Mass
   • How Do Atoms Exist?

4. Chapter 4: Structure of the Atom

   12 topics

   • Introduction of structure of an atom
   • Charged Particles in Matter
   • The Structure of an Atom
   • Thomson's model of an atom
   • Rutherford's model of an atom
   • Drawbacks of Rutherford's model of the atom
   • Bohr's model of atom
   • Neutrons

5. Chapter 5: The fundamental unit of life

   16 topics

   • Introduction of The fundamental unit of life
   • What are Living Organisms Made Up of?
   • What are these structures?
   • What is a Cell Made Up of? What is the Structural Organisation of a Cell?
   • Plasma Membrane
   • Cell Wall
   • Nucleus
   • Cytoplasm

6. Chapter 6: Tissues

   11 topics

   • Introduction of Tissues
   • Are Plants and Animals Made of Same Types of Tissues?
   • Plant Tissues : Meristematic tissue
   • Permanent tissue
   • Simple permanent tissues
   • Complex permanent tissues
   • Animal tissues
   • Epithelial tissue

7. Chapter 7: Motion

   10 topics

   • Introduction of Motion
   • Describing Motion
   • Motion along a straight line
   • Uniform Motion and Nonuniform Motion
   • Speed with Direction: Velocity
   • Rate of Change of Velocity: Acceleration
   • Graphical Representation of Motion: Distance-Time Graphs
   • velocity-time graph

8. Chapter 8: Force and Laws of Motion

   7 topics

   • Introduction to Force and Laws of Motion
   • Balanced and Unbalanced Forces
   • First Law of Motion
   • Inertia and Mass
   • Second Law of Motion
   • Mathematical Formulation of the Second Law of Motion
   • Third Law of Motion

9. Chapter 9: Gravitation

   14 topics

   • Gravitation
   • Universal Law of Gravitation
   • Importance of the Universal Law of Gravitation
   • Free Fall
   • Calculating the Value of 𝑔 g
   • Motion of Objects Under the Influence of Gravitational Force of the Earth
   • Mass
   • Weight

10. Chapter 10: Work and energy

    13 topics

    • Introduction of Work and energy
    • Work
    • Not much work in spite of working hard
    • Scientific Conception of Work
    • Work done by a constant force
    • Energy
    • Form of energy
    • Kinetic Energy

11. Chapter 11: Sound

    12 topics

    • Introduction of Sound
    • Production of Sound
    • Propagation of sound
    • Sound waves are longitudinal waves
    • Characteristics of a Sound Wave
    • Speed of Sound in Different Media
    • Reflection of Sound
    • Echo

12. Chapter 12: Improvement in Food Resources

    19 topics

    • Introduction of Improvement in Food Resources
    • Improvement in Crop Yields
    • Crop Variety Improvement
    • Crop Production Management
    • Nutrient Management
    • Manure
    • Fertilizers
    • Irrigation