The Chinese University of Hong KongThe Chinese University of Hong KongEDD 5161A (Group 5)EDD 5161A (Group 5)

Subject: Chemistry

Topic: Common Metals

Distribution of workContent Content : Wong Chi Wai: Wong Chi Wai

Design content layoutDesign content layout: Ho Pui Yan, Sze Hiu Ying, : Ho Pui Yan, Sze Hiu Ying, Wong Chi Wai, Yiu Bo KwaiWong Chi Wai, Yiu Bo Kwai

Graphic DesignGraphic Design: Ho Pui Yan, Sze Hiu Ying, Wong : Ho Pui Yan, Sze Hiu Ying, Wong Chi Wai, Yiu Bo KwaiChi Wai, Yiu Bo Kwai

Sound effectSound effect: Ho Pui Yan,Wong Chi Wai, Yiu Bo : Ho Pui Yan,Wong Chi Wai, Yiu Bo KwaiKwai

Final make - upFinal make - up: Sze Hiu Ying: Sze Hiu Ying

Introduction

This presentation package is suitable for This presentation package is suitable for Form 4 Chemistry students. It provides Form 4 Chemistry students. It provides background knowledge of metals. It would background knowledge of metals. It would be used as lecture notes with teacher’s be used as lecture notes with teacher’s explanation. explanation.

Common MetalsCommon Metals

Factors for the use of metalsFactors for the use of metals Uses of common metalsUses of common metals Process of obtaining metalProcess of obtaining metal Factors for availability of metalFactors for availability of metal Structure of metalStructure of metal Properties of metal Properties of metal

Factors for the use of metal

It is very hard!

Hardness

Good appearance

Factors for the use of metal

The gold isvery attractive

It is veryexpensive

Factors for the use of metal

I can fly!

Low Density

High Density

Factors for the use of metal

Corrosion Corrosion resistantresistant

Uses of Metals

IronIron TitaniumTitanium CopperCopper AluminiumAluminium GoldGold

Uses of Iron

Uses of Titanium

Titanium is used to build plane &Titanium is used to build plane &spacecraft body.spacecraft body.

Uses of Copper

Electrical wires Water pipes Cooking Utensils

Uses of Aluminium

Windowframe Soft drink

can

OverheadCable

Plane body

Uses of Gold

Process of Obtaining MetalProcess of Obtaining Metal

Mining the metal oresMining the metal ores Extraction Extraction PurificationPurification

Factors for the availability of metals

Cost of extraction

Cost of mining the metal ores

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- Electron + - Positive ion

Structure of Metals

Giant metallic bondGiant metallic bond

Delocalized mobile electrons - ‘sea’ of electronsDelocalized mobile electrons - ‘sea’ of electrons

Properties of Metal

Hot hot!

High melting point & boiling point

Good heat conductor

Good electrical conductor

Properties of Metal

Properties of Metal

I’m flattened!Malleable

Properties of Metal

Help!

Ductile !

The End

Congratulations!