Asked in Oral Health and Dental CareAffiliate MarketingChemistryMining
Which of these is not an ore copper carbon silver iron?
May 28, 2007 9:11PM
copper, silver and carbon are not real ores but could be found as pure elements: carbon as coal, or diamond. Silver as nuggets. Copper as native copper specimen. Iron is almost never found in the free elemental state, and should be extracted from iron ore, which is not iron, but mainly made of iron oxides.