Genesis Of Periodic Classification
Chapter Name : Classification Of Elements And Periodicity In Properties |
Sub Topic Code : 102_11_03_02_01 |
Topic Name : Genesis Of Periodic Classification |
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Sub Topic Name : Genesis Of Periodic Classification |
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Introduction
As newer elements were discovered, they were gradually arranged in different patterns according to the periodic properties. They were in the end classified into the modern periodic table.
Pre-Requisites:
Element, periodic properties, periodic trend, periodicity, classification
Activity:
Pendulum clock, the second’s needle on a clock, seasons of the year.
Real Life Question:
What is the pattern of the seasons of the earth? How does a pendulum swing?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| classification | Classification is to categorize things based on their properties. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Pendulum clock | Notice the times a pendulum comes to the centre position in every two swings. |
Real life uses :
Periodicity in nature – e.g. seasons, day and night cycles, pendulum
Places to visit :
Music class, bedroom
Practical examples around us
| Examples | Explainations |
|---|---|
| Pendulum clock | A pendulum clock swings in a periodic fashion. You can predict the number of times the pendulum would come to zero position in let’s say 10 to and fro swings |
What you learn in Theory:
As newer elements were discovered, they were gradually arranged in different patterns according to the periodic properties. They were in the end classified into the modern periodic table.
What you learn in Practice:
Most substances can be grouped according to one or more similar factors. Therefore classification can be done using the similar or differing properties.