7/18/13
7. An alloy is a solid combination of atoms of two or more metals.
8. Two alloys I use regularly are steel and carat-gold. Steel are alloys that consist of iron and carbon. Steal is used for cars and kitchens. Carat-gold is an alloy that is made up of gold, copper, and silver. It is used for jewelry.
9. A nonmetal that is a component of both steel and stainless steel is carbon.
10. Chromium- platinum (Cr3Pt) is a very hard alloy that forms the basis of some commercial razor blade edges.
11. Elements that behave as semi-conductors are called metalloids. They are located at the break of metals and nonmetals. They portray qualities of both metal and nonmetals. Metals are known to be reactive, and nonmetals are not reactive.
12. Three elements commonly used for doping semiconductors are phosphorus, aluminum, and gallium.
13. The primary use of the products of semi conductor technology is to allow computers to process digital information. Some semi-conductor devices include transistors and integrated circuits used in commuters and other electronics.
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