Is Matter Around Us Pure? - Class 9 Science Notes
Introduction How do we define pure? The use of word ‘Pure’ in science means that all the constituent particles of a substance are the...
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Atoms and Molecules - Class 9 Science Notes
Laws of Chemical Combination Antoine L. Lavoisier laid the foundation of chemical sciences by establishing two important Laws of Chemical...
Structure of Atoms - Class 9 Science Notes
Introduction Matter is made up of fundamental building blocks, that is atoms and molecules. The existence of different kinds of matter is...
Tissues - Class 9 Science Notes
Introduction In unicellular organisms, a single cell performs all basic functions such as ingestion, digestion, absorption, reproduction,...
Diversity in Living Organism - Class 9 Science Notes
Introduction - Each organism is different from the other to a lesser or greater extent. - On one hand we have microscopic bacteria of a...
Fundamental Unit of Life - Class 9 Science Notes
Introduction What is a cell? A cell is considered as the building block of life. All living organisms are composed of these microscopic...
Motion - Class 9 Science Notes
Introduction Rest: A body is said to be in a state of rest when its position does not change with respect to a reference point. Motion: A...
Forces and Laws of Motion- Class 9 Science Notes
Introduction Force can be called as a push or pull on the object that enables us to do any work. For example in order to open the door we...
Gravitation - Class 9 Science Notes
Introduction What is Gravitational Force? Every object in the universe is attracting every other object of the universe. The force of...
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