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CBSE Revision Notes Class 9 Science Chapter 1 Matter in Our Surroundings

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CBSE Revision Notes Class 9 Science Chapter 1: Matter in Our Surroundings

 

CBSE Revision Notes Class 9 Science Chapter 1 Matter in Our Surroundings are provided to help the students understand and revise the concepts right from the beginning. The concepts taught in Class 9 are important to be understood as these concepts are continued in upcoming classes. To score good marks in the Class 9 Science examination, it is advised to solve questions provided in the Revision Notes Class 9 Science Chapter 1. These revision notes for Class 9 Science help the students to revise all the concepts in a better way.

Swiflearn provides Revision Notes and keynotes chapter wise for the CBSE board exam in an easy-to-understand, free downloadable PDF format so students can use it for their studies and score better in their board exams. The CBSE Class 9 Revision Notes are made for the main subjects of Science and Science. These core subjects are very critical as they are the stepping stones and play a crucial role in a student’s future. They might be tricky for students. The CBSE Class 9 Revision Notes for each chapter will enable them to have an expert studying pattern with which they can enjoy learning the subject and perform better in the exams.

CBSE Class 9 Science Revision Notes are designed keeping in mind the exam pattern and syllabus of NCERT 2020-21. Students can download the PDF for free and practice the questions to score well in the coming exams.

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CBSE Revision Notes Class 9 Science Chapter 1: Matter in Our Surroundings

 

Matter:- Matter is any substance that has mass and takes up space by having volume. All everyday objects that we can touch is called matter.

States of matter:– There are three states of matter namely- Solids, Liquids, and Gases.

Solids:- Solid is one of the three fundamental states of matter. The atoms in a solid are closely packed together leaving negligible space between the constituent atoms. Solids have a definite shape, size, volume and density.
Examples of solids are:- metals, minerals such as quartz and mica, etc.

Liquids:- Liquid is another state of a matter. A liquid can be defined as a nearly incompressible fluid that means this state of the matter cannot be compressed under very high pressure. Liquids don’t have a definite shape i.e. it can take the shape of the container in which it is kept but the volume and density remain the same.
Examples of liquids are:- water, vegetable oil, mercury, etc.

Gases:- Gas is also one of the states of matter. A gas can be defined as a highly compressible fluid that means this state of matter can be compressed to a high extent under pressure. Gases neither have a definite shape nor have a definite volume. Since they don’t have definite volume their density is also not definite.
Examples of gases are:- oxygen, nitrogen, helium, etc.

 

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