Hum 300 History And Methods Of Science

Code : Page 1 ball fields and plumbago be both(prenominal) made from Carbon Atoms . Why is graphite so untold weakerblack lead , mineral form of century . Carbon is allotropical (That is , it exists in more than one form other forms imply adamant and buckminster completeurene . Although , graphite is chemically the same as Diamond , it differs greatly from that mineral in most of its physical properties . Graphite is colored , opaque , and metallic in luster and has a constriction of 2 .09 to 2 .2g /cubic centimeter . Graphite is passing soft- its hardness rates 1 to 2 or a scale of 1 to 10 . It smudges anything with which it comes in touch it feels oily or slippery to the touch . It crystallizes in flakes or mammoth irregular masses rather than well-developed crystals . A cracking t disturbre director of galvanisi ngity , graphite is a poor conductor of heat .

It occurs in nature as a mineral that eer contains impuritiesGraphite is widely distri neverthelessed over the world important deposits are run aground in China , India , North Korea , Mexico , brazil-nut tree , the Czech res publica and Turkey . Graphite is made by artificial means by bake a mixture of petroleum change state and coal lurch pitch at 950 Degree C (174 Degree F ) for 11 to 13 weeks , then transferring the bake product to electric graphitizing furnaces and heating it to about 2800 degree C (5 ,600 Degree F ) for 4 or 5 weeks . most(prenominal) of the graphitizing takes place because of the ! temperature , but the process is also a finish step , as virtually al the metal oxide impurities in the raw carbon are reduced to metal and zap . Source : Graphite Microsoft Encarta 2006 (DVD Redmond , WA : Microsoft Corporation , 2005...If you want to adhere a full essay, order it on our website: OrderCustomPaper.com

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