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Sub-Atomic Particles
Chapter Name : Structure Of Atom
Sub Topic Code : 102_11_02_01_01
Topic Name : Sub-Atomic Particles
Sub Topic Name : Discovery Of Electron
Introduction

Discuss the experiment.

Pre-Requisites:

Knowledge about an atom

Activity:

Keep a magnet close to TV. Observe what happens .

Real Life Question:

“How do pictures on the television appear?”

Key Words / FlashCards
Key Words Definitions (pref. in our own words)
Dalton’s atomic theory Cathode ray discharge tubes Basic unit of matter is atom Partially evacuated tubes used to study electric discharge, made f glass , having anode and cathode.
Learning aids / Gadgets
Gadgets How it can be used
Make a chart for the sub-particles and there properties Put it up somewhere in your room so that u can have a look everyday.
Real life uses :

Electron microscope, TV

Practical examples around us
Examples Explainations
Pictures are viewed on the television Due to cathode rays hitting the fluorescent screen
What you learn in Theory:

Discovery of electron

What you learn in Practice:

How television screen functions ?

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