We are Launching Live Zoom Classes for 9th and 10th-grade Students. The first batch is from 7th April 2025. Register for a Free demo class.
Chapter 4 (Chemistry): The Structure of the Atom – Class 9 NCERT Science Detailed Study Notes. 1. The Dawn of Subatomic Particles At the end of the 19th century, the prevailing scientific view, based on Dalton’s atomic theory, was that…
Chapter 3 (Chemistry): Atoms and Molecules – Class 9 NCERT Science Detailed Study Notes. 1. Historical Foundations of Atomic Theory The concept that matter is composed of fundamental, indivisible particles dates back to ancient times. These early ideas were philosophical…
Chapter 2 (Chemistry): Is Matter Around Us Pure? – Class 9 NCERT Science Detailed Study Notes. 1. Understanding Purity and Mixtures 1.1 Pure Substances vs. Mixtures In everyday language, “pure” often means having no adulteration. However, in a scientific context,…
Chapter 1 (Chemistry): Matter in Our Surroundings – Class 9 NCERT Science Detailed Study Notes. 1. The Concept of Matter 2. The Physical Nature of Matter 3. Characteristics of Particles of Matter 4. The Three States of Matter Matter exists…
Introduction The liquid state of matter is one of the most familiar forms of matter in the natural world. From the water we drink to the blood that flows through our veins, liquids are essential to life on Earth. Unlike…
Introduction Matter exists in various states, with the solid state being one of the most fundamental and familiar. From everyday objects like rocks and metals to more complex materials like crystals and polymers, solids form the backbone of the material…
Structure of The Atom Thomson’s Model of an Atom Thomson proposed that: Rutherford’s Model of an Atom Conclusions drawn from the α-particle scattering experiment Drawbacks of Rutherford’s model of the atom Neutrons Atomic Number Mass Number Isotopes Applications of Isotopes…
Please download the PowerPoint presentation (PPT) of the chapter "Is Matter Around Us Pure?" from here. I used this ppt in my class and students can use this ppt as a short note on the topic Is Matter Around Us Pure?
Chapter 4: Carbon and Its Compounds Introduction: Two or more elements combine to form a compound. There are two types of compounds: Organic Compounds and Inorganic Compounds. Organic compounds are made up of carbon and hydrogen (generally known as hydrocarbons)…
