MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Close-up of copper smelted from copper oxide. Add equal parts of copper oxide and charcoal granules to a boiling tube. Using a Bunsen burner heat the tube strongly for 5 minutes and then allow to cool. Small granules of red copper can be seen. Smelting is a chemical reduction of an oxide of a metal with carbon in a furnace.
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