The Chinese University of Hong Kong EDD 5161A (Group 5) Subject: Chemistry Topic: Common Metals.

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Presentation transcript:

The Chinese University of Hong Kong EDD 5161A (Group 5) Subject: Chemistry Topic: Common Metals

Distribution of work Content : Wong Chi Wai Design content layout: Ho Pui Yan, Sze Hiu Ying, Wong Chi Wai, Yiu Bo Kwai Graphic Design: Ho Pui Yan, Sze Hiu Ying, Wong Chi Wai, Yiu Bo Kwai Sound effect: Ho Pui Yan,Wong Chi Wai, Yiu Bo Kwai Final make - up: Sze Hiu Ying

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

Common Metals Factors for the use of metals Factors for the use of metals Uses of common metals Uses of common metals Process of obtaining metal Process of obtaining metal Factors for availability of metal Factors for availability of metal Structure of metal Structure 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 is very attractive It is very expensive

Factors for the use of metal I can fly! Low Density High Density

Factors for the use of metal Corrosion  Corrosion resistant resistant

Uses of Metals n Iron n Titanium n Copper n Aluminium n Gold

Uses of Iron

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

Uses of Copper  E E lectrical wires  W ater pipes  C ooking Utensils

Uses of Aluminium Window frame Soft drink can Overhead Cable Plane body

Uses of Gold

Process of Obtaining Metal ì Mining the metal ores ì Extraction ì Purification

Factors for the availability of metals Cost of extraction Cost of mining the metal ores

Electron + - Positive ion Structure of Metals Giant metallic bond  Giant metallic bond  Delocalized mobile electrons - ‘sea’ of electrons

Properties of Metal Hot hot! High melting point & boiling point

Good heat conductor Good electrical conductor Properties of Metal

I’m flattened! Malleable

Properties of Metal Help! Ductile !

The End Congratulations!