Electronic Configurations And Types Of Elements S- , P- , D- , F- Blocks
Chapter Name : Classification Of Elements And Periodicity In Properties |
Sub Topic Code : 102_11_03_06_05 |
Topic Name : Electronic Configurations And Types Of Elements S- , P- , D- , F- Blocks |
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Sub Topic Name : Metals , Non-Metals And Metalloids |
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Introduction
• Metals are lustrous (shiny), malleable, ductile, and are good conductors of heat and electricity. They are mostly solids at room temp. Except for mercury (Hg). • Nonmetals are the opposite of metals. They are dull, brittle, nonconductors (insulators). Some are solid, but many are gases, and Bromine is a liquid • Metalloids are also called semi-metals. They have characteristics of both metals and nonmetals. They are shiny but brittle. And they are semiconductors.
Pre-Requisites:
Element, periodic properties, classification, electronic configuration, orbital
Activity:
Aluminium is a metal which is malleable that is why it can be beaten into sheets to give aluminium foil.
Real Life Question:
What are diamonds made of? What are electric wires made of?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| conductor | Substance that lets something pass through it. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A piece of wire | Wire is used in electrical cables. It is made of copper, a metal that conducts electricity. |
Real life uses :
Copper wires, aluminium foil, chlorine disinfectant
Places to visit :
Kitchen, switchboard, garage
Practical examples around us
| Examples | Explainations |
|---|---|
| Chlorine disinfectant | Chlorine is used to disinfect water. |
| Aluminium foil | Aluminium is a metal which is malleable and therefore can be beaten into sheets to give aluminium foil. |
What you learn in Theory:
• Metals are lustrous (shiny), malleable, ductile, and are good conductors of heat and electricity. They are mostly solids at room temp. Except for mercury (Hg). • Nonmetals are the opposite of metals. They are dull, brittle, nonconductors (insulators). Some are solid, but many are gases, and Bromine is a liquid • Metalloids are also called semi-metals. They have characteristics of both metals and nonmetals. They are shiny but brittle. And they are semiconductors.
What you learn in Practice:
Metals are used to make wires, sheets, tools. Non- metals are bad conductors of heat and electricity so they are not used for making wire. Swimming pools are disinfected with chlorine.