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Science Notes
WORLD OF MICROBES Notes 9th Science Lesson 19 Notes in English
WORLD OF MICROBES Notes 9th Science Lesson 19 Notes in English Introduction Microbiology (greek words: mikros -small, bios- life bearing,…
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CARBON AND ITS COMPOUNDS Notes 9th Science Lesson 15 Notes in English
CARBON AND ITS COMPOUNDS Introduction Carbon is one of the most important non-metallic element. Antoine Lavoisier named Carbon from the…
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ACIDS, BASES AND SALTS Notes 9th Science Lesson 14 Notes in English
ACIDS, BASES AND SALTS Introduction We know that the physical world around us is made of large number of chemicals.…
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UNIVERSE Notes 9th Science Lesson 12 Notes in English
UNIVERSE Introduction In the earlier days, before the invention of astronomical instruments, people thought that Earth is the centre of…
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PERIODIC CLASSIFICATION OF ELEMENTS Notes 9th Science Lesson 10 Notes in English
PERIODIC CLASSIFICATION OF ELEMENTS Introduction We live in the world of substances with great diversity. Substances are formed by the…
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MATTER AROUND US Notes 9th Science Lesson 9 Notes in English
MATTER AROUND US Introduction We use the term matter to cover all substances and materials from which the universe is…
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ATOMIC STRUCTURE Notes 9th Science Lesson 8 Notes in English
ATOMIC STRUCTURE Introduction Just as a small child wants to take a toy apart to find out what is inside,…
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Heat Notes 9th Science Lesson 7 Notes in English
Heat Notes 9th Science Lesson 7 Notes in English Introduction All substances in our surrounding are made up of molecules.…
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Sound Notes 9th Science Lesson 6 Notes in English
Sound Notes 9th Science Lesson 6 Notes in English Introduction Sound is a form of energy which produces sensation of…
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Magnetism and Electromagnetism Notes 9th Science Lesson 5 Notes in English
Magnetism and Electromagnetism Notes 9th Science Lesson 5 Notes in English Introduction Have you ever played with magnets? Do you…
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