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CBSE Revision Notes Class 9 Science Chapter 3 Atoms and Molecules

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CBSE Revision Notes Class 9 Science Chapter 3 Atoms and Molecules

 

CBSE Revision Notes Class 9 Science Chapter 3 Atoms and Molecules 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 Class 9 Science examination, it is advised to solve questions provided in the Revision Notes Class 9 Science Chapter 3. 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 plays a crucial role in 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 my 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 3 Atoms and Molecules

The Universe is made up of atoms, which contain protons (positively charged particles), neutrons (particles with no charge), and electrons (negatively charged particles). Molecules forms when two or more atoms bond together.

 

Atoms:- They are the basic building blocks of ordinary matter. Atoms join together to form molecules, which in turn form most of the objects around us.

Dalton’s atomic theory:- According to Dalton’s atomic theory, all matter, whether an element, a compound or a mixture is composed of small particles called atoms.

Molecules:- Molecules are the smallest particle of a substance that retains the chemical and physical properties of that substance. Example:- two atoms of hydrogen and one atom of oxygen react to form one molecule of water.

 

 

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