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Chicky
teaches chemistry to noobs
likes to watch naruto & bleach
enjoys playing computer & PSP games

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Obtained SEDD by 2008

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Wednesday, September 06, 2006

An alloy is a mixture (not a compound) of two or more metallic elements (sometimes carbon is also used). Some common alloys u need to know are brass, bronze, steel and stainless steel.

Brass (60 - 80% Cu; 20 - 40% Zn)
Use for making moving parts of clocks and watches, nuts, bolts, rod tubes, musical instruments and ornaments.

Bronze (90 - 95% Cu; 5 - 10% Sn)
Use for making coins, medals and sculptures.

Steel (98 - 99.5% Fe; 0.15 - 1.5% C)
Construction of bridges, ships, cars and machinery.
Note: steel cannot be used as a anode for electrolysis of brine because the iron reacts readily with the chlorine produced, forming iron(III) chloride.

Stainless steel (90 - 95% Fe; 5 - 10% Cr, Ni)
Use for making cutlery, tools and surgical instruments.

[8:23 am] chicky