Journey Inside the Atom - Introduction | Class 9 Chemistry Chapter 6 | New NCERT 2027 | Kumar Sir

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00:00 Introduction – Journey Inside the Atom
00:40 What is an Atom?
01:14 Everything is Made of Atoms
01:50 Origin of the Atomic Concept
02:31 Democritus and the Term 'Atomos'
03:03 Dalton's Atomic Theory (1808)
03:36 Key Postulates of Dalton's Theory
04:17 J.J. Thomson's Cathode Ray Experiment
04:56 Discovery of the Electron
05:35 J.J. Thomson's Atomic Model
06:19 Watermelon Model Explained
06:54 Plum Pudding Model
07:37 Why Thomson's Atomic Model Failed
08:15 Introduction to Rutherford's Experiment

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