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14-4 Elements from the earth

14-4 Elements from the earth. Separating Metals. Gold : panning Characteristic Property Use golds h igh density to separate it from its surrounding materials Large scale panning with the use of dredges. Copper : Electrolysis Exists as a compound ORE – rock with a useful metal

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14-4 Elements from the earth

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  1. 14-4 Elements from the earth Separating Metals

  2. Gold: panning • Characteristic Property • Use golds high density to separate it from its surrounding materials • Large scale panning with the use of dredges

  3. Copper: Electrolysis • Exists as a compound • ORE – rock with a useful metal • Chemical Activity • Grind ore & dissolve in a solution • Insert electrode with current • Useful metal will move to one probe

  4. Iron: Blast Furnace • Exists as an ore • Chemical Activity • Iron ore & source • of carbon (coke) • React at high temperatures • in furnace • Leave the purified iron behind

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