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NCERT Class 8 Science Chapter 6 - Combustion and Flame Notes

Chapter 6 - Combustion and Flame Notes 1. What is combustion? A chemical process in which a substance reacts with oxygen to give off heat is...

Chapter 5 - Coal and Petroleum Notes 1. Resources • We use various materials for our basic needs. Some of them already exist in nature while...

Chapter 13 - Sound Notes 1. What is Sound? → Sound is a form of energy that enables us to hear and it travels in waves. → When matter vibrat...

Chapter 9 - Reproduction in Animal Notes 1. What is Reproduction? Reproduction is a process by which living things give birth to a new gener...

Chapter 4 - Materials: Metals and Non-Metals Notes 1. Occurrence of metals and non-metals • Out of the 92 naturally occurring elements 70 ar...

Chapter 11 - Force and Pressure Notes 1. Force Force is push or pull of an object. Example: An object has to be moved, it has to be pushed o...

Chapter 12 - Friction Notes 1. Force of Friction Force of friction is the force which opposes the motion of an object over a surface. The f...

Chapter 10 - Reaching the Age of Adolescence Notes 1. Different stages of human • Infants • Toddlers • Adolescents/Teen age • Adults • Old a...

Chapter 2 - Microorganisms: Friends and Foe Notes 1. Microorganisms (Microbes): • Microorganisms are very small organisms which cannot be se...

Chapter 3 - Synthetic Fibres and Plastics Notes 1. Natural Fibres • A fibre is a thin thread of a natural or artificial substance, especiall...

Chapter 1 - Crop Production and Management Notes 1. Crop When plants of same kind are grown and cultivated at one place on a large scale, it...