Physical Properties Of Metals And Non-Metals
Chapter Name : Materials: Metals And Non-Metals |
Sub Topic Code : 102_08_04_02_01 |
Topic Name : Physical Properties Of Metals And Non-Metals |
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Sub Topic Name : Physical Properties Of Metals And Non-Metals |
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Introduction
History and importance of metals
Pre-Requisites:
Basic knowledge on materials.
Activity:
Test whether electricity passes through materials like iron nail, coal block, copper nail, etc and understand conductivity with simple battery and a small bulb.
Real Life Question:
What is the property present in aluminum so that it can be used for wrapping food?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Metal | An element which is a good conductor of heat and electricity is called as a metal |
| Non metal | An element which is not a good conductor of heat and electricity is called as a non metal |
| Malleability | Property by which metals can be beaten into thin sheets is called as malleability |
| Ductility | Property by which metals can be drawn into thin wires is called as ductility |
| Conductivity | Measure of the ability of materials to allow the flow of electricity. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Conductivity chart | Differentiate metals from non metals by checking conductivity of the materials. |
Real life uses :
Thin sheets of aluminum are used in wrapping of food.
Practical examples around us
| Examples | Explainations |
|---|---|
| Why don’t we see coal or sulphur wires but we see copper wires | This is because metals posses a property called ductility by which they can be drawn into wires. |
What you learn in Theory:
Physical properties of metals like ductility, malleability, sonorous.
What you learn in Practice:
Variations in properties between metals and non metals and uses of properties like ductility and malleability.