NCERT Class 9 Science Notes

Edited By Vishal kumar | Updated on Apr 09, 2025 12:01 PM IST

NCERT Class 9 Science Notes are a requirement for students wishing to create a strong science foundation. The notes simplify complex ideas of every one of the 15 Class 9 NCERT book chapters, so it is easier to study and revise. They are particularly formatted to stick to the CBSE syllabus and are available in PDF format to make it easier to access.

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This Story also Contains

NCERT Class 9 Science Notes
Why Class 9 Science Notes PDFs Are Important?
Science Notes For Class 9 PDF Free Download: Step-by-Step Process
How to Use Science Notes For Class 9 Effectively
Also, students can refer:

Whether you're preparing for exams or desiring to seek careers in engineering, medicine, or other specialized fields, these chapter-wise notes serve as a reliable guide to learning key concepts. These notes teach students to make confident shifts to following classes by breaking down complex concepts into simple and easy words.

Below, you'll find a comprehensive list of chapter-wise notes for Class 9. You can access and download them for free by clicking the link below.

Science Notes For Class 9 PDF Free Download - Chapter-wise
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 tissues
Chapter 6	Tissues
Chapter 7	Diversity in living organisms
Chapter 8	Motion
Chapter 9	Force and laws of motion
Chapter 10	Gravitation
Chapter 11	Work and Energy
Chapter 12	Sound
Chapter 13	Why do we fall ill
Chapter 14	Natural resources
Chapter 15	Improvement in food resources.

These Class 9 notes for all chapters prove to be a convenient and efficient way to revise important topics swiftly. The science notes for class 9 compile crucial information in one accessible location, aiding in comprehensive revision. Moreover, the Class 9 Science chapters notes offer the flexibility of offline preparation, allowing students to download and revisit the content at their convenience. By simply clicking the provided link for the NCERT Class 9th Notes Subject-wise, students can access these notes hassle-free. These class 9 science notes pdf are valuable resources for exam preparation, catering to both offline and online study modes.

Why Class 9 Science Notes PDFs Are Important?

Class 9 science notes in PDF format hold significant importance for several reasons:

Structured Learning: PDF notes are typically organised by chapter, allowing for a more structured approach to learning. This allows students to move through the curriculum in a systematic manner, ensuring that each topic is thoroughly covered.
Accessibility: Because the notes are in PDF format, they are easily accessible on a variety of devices, including computers, tablets, and smartphones. This adaptability enables students to study whenever and wherever they want, facilitating efficient learning.
Portability: PDF notes are portable and can be used in place of physical textbooks. This convenience is especially useful for students who want to study on the go or who do not have access to traditional learning resources.
Printable: Students have the option to print PDF notes if they prefer studying from hard copies. This feature provides flexibility in choosing the preferred mode of study based on individual learning preferences.
Revision Aid: PDF notes are excellent revision aids. Before exams, students can quickly review key concepts, formulas, and explanations, which helps to reinforce their understanding of the material.
Cost-Effective: Access to PDF notes is totally free, making them a cost-effective alternative to traditional textbooks. This accessibility democratizes education, allowing students from diverse backgrounds to benefit.

Science Notes For Class 9 PDF Free Download: Step-by-Step Process

To download Class 9 science notes in PDF for convenient access, follow these steps:

Visit the Careers360 website.
Navigate to the 'Resources' section by scrolling down.
Click on 'NCERT.'
Once redirected, locate the 'NCERT Notes' section for the specific class and subject.
Click on the desired chapter; a link will appear.
Open the chapter by clicking on the provided link.
Find the 'Download PDF' option at the top right corner of the page.
Select the desired chapter, and click on 'Download PDF.'
Provide your email address for PDF delivery, then proceed with the download.

How to Use Science Notes For Class 9 Effectively

Using science notes for Class 9 effectively can improve your understanding of the subjects and your performance. Here are some pointers on how to use them effectively:

Read Actively: Actively read and engage with the content as you go through the notes. Highlight important points, underline key concepts, and make your own notes in the margins.
Create a Schedule: Make time in your study schedule to go over the science notes. Consistent and regular revision aids in the reinforcement of concepts.
Summarize Concepts: Try to summarise the main concepts in your own words after reading a section or chapter. This strengthens your understanding and aids retention.
Use Visual Aids: If your notes include diagrams, charts, or graphs, pay special attention to them. Visual aids can simplify complex ideas and make them easier to remember.
Practice Problem Solving: Work through any practice problems or examples included in the notes. Problem-solving applications help to solidify your understanding of concepts.
Regular Revision: Review the entire set of notes on a regular basis, not just before exams. Regular revision aids in long-term memory retention.

Also, students can refer:

Subject-wise NCERT Notes:

NCERT Notes Class 9 Maths

Frequently Asked Questions (FAQs)

1. Are these NCERT Class 9 Science PDFs notes enough to score well in the examinations?

While the Class 9 science notes PDFs are helpful for quick revision, it's crucial to study the textbook thoroughly for a deep understanding of concepts. The notes serve as aids for efficient revision, enabling a comprehensive grasp of all concepts in a short span of time.

2. What are the important topics to cover from the particular chapter to score good in class 9th for Science examination/ class 9th Science chapters notes?

The importance of all chapters individually cannot be separated as all the chapters are important and the topics included in that are mandatory to cover to score good in CBSE class 9th Science exam.

3. Are these notes helpful from an examination point of view to score good marks in class 9th?

Yes, well-prepared Class 9 science notes can be beneficial for exams, serving as handy revision tools. However, combining them with regular textbook study, problem-solving, and active class participation is essential for comprehensive preparation and scoring well.

Also Read

NCERT Exemplar Class 9 Solutions - Subject Wise Problems with Solutions

NCERT Exemplar Class 9 Science Solutions Chapter 1 Matter in Our Surroundings

NCERT Exemplar Class 9 Science Solutions Chapter 6 Tissues

NCERT Exemplar Class 9 Science Solutions Chapter 2 Is Matter Around Us Pure

NCERT Exemplar Class 9 Science Solutions Chapter 4 Structure of the Atom

NCERT Exemplar Class 9 Science Solutions Chapter 3 Atoms and Molecules

NCERT Class 9 Science Notes - Download Chapter-wise PDFs

NCERT Class 9 Maths Chapter 2 Notes Polynomials - Download PDF

NCERT Class 9 Maths Notes - Download Chapter Wise PDFs

NCERT Class 9 Maths Chapter 8 Notes Quadrilaterals - Download PDF

NCERT Class 9 Maths Chapter 1 Notes Number System - Download Free PDF

NCERT Class 9 Maths Chapter 5 Notes Introduction To Euclid’s Geometry - Download PDF

NCERT Syllabus for Class 9 Maths 2025-26 - Download Latest Syllabus PDF

NCERT Solutions for Class 9 - Subject-wise PDFs Updated for 2024-25

NCERT Solutions for Class 9 Science Chapter 15 Improvement in Food Resources

NCERT Solutions For Class 9 Science Chapter 6 Tissues

NCERT Solutions For Class 9 Science Chapter 5 The Fundamental Unit Of Life

NCERT Solutions for Class 9 Science

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Popular Questions

A block of mass 0.50 kg is moving with a speed of 2.00 ms^-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1) $0.34\; J$	Option 2) $0.16\; J$
Option 3) $1.00\; J$	Option 4) $0.67\; J$

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times. Assume that the potential energy lost each time he lowers the mass is dissipated. How much fat will he use up considering the work done only when the weight is lifted up ? Fat supplies 3.8×10⁷J of energy per kg which is converted to mechanical energy with a 20% efficiency rate. Take g = 9.8 ms⁻² :

Option 1)

2.45×10⁻³ kg

Option 2)

6.45×10⁻³ kg

Option 3)

9.89×10⁻³ kg

Option 4)

12.89×10⁻³ kg

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1) $2,000 \; J - 5,000\; J$	Option 2) $200 \, \, J - 500 \, \, J$
Option 3) $2\times 10^{5}J-3\times 10^{5}J$	Option 4) $20,000 \, \, J - 50,000 \, \, J$

A particle is projected at 60⁰ to the horizontal with a kinetic energy $K$ . The kinetic energy at the highest point

Option 1) $K/2\,$	Option 2) $\; K\;$
Option 3) $zero\;$	Option 4) $K/4$

In the reaction,

$2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}$

Option 1) $11.2\, L\, H_{2(g)}$ at STP is produced for every mole $HCL_{(aq)}$ consumed	Option 2) $6L\, HCl_{(aq)}$ is consumed for ever $3L\, H_{2(g)}$ produced
Option 3) $33.6 L\, H_{2(g)}$ is produced regardless of temperature and pressure for every mole Al that reacts	Option 4) $67.2\, L\, H_{2(g)}$ at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, $Mg_{3}(PO_{4})_{2}$ will contain 0.25 mole of oxygen atoms?

Option 1) 0.02	Option 2) 3.125 × 10^-2
Option 3) 1.25 × 10^-2	Option 4) 2.5 × 10^-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1) decrease twice	Option 2) increase two fold
Option 3) remain unchanged	Option 4) be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1) Molality	Option 2) Weight fraction of solute
Option 3) Fraction of solute present in water	Option 4) Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol^-1) is

Option 1) twice that in 60 g carbon	Option 2) 6.023 × 10²²
Option 3) half that in 8 g He	Option 4) 558.5 × 6.023 × 10²³

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t²) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m² , the number of rotations made by the pulley before its direction of motion if reversed, is