Extraction Of Metals From Ores

1. Mr Crooks Extraction of Metals from their Ores

2. Rock, Mineral, Ore ? Rock ? Mixture of minerals . No fixed/specific chemical composition Mineral ? Ocurring naturally in the earth. Can be mined . Has a fixed chemical composition. (Includes mineral oil). Ore ? A mineral from which a metal can be obtained – economically.

3. GOLD

4. Kate Middleton's Wedding Ring Is Made of Welsh Gold

5. Most ancient metal sculpture in the World Pharoah Pepi 1. (2289-2255 BC) 4300 years old. Cairo Museum, 1998 Made of copper

6. Copper Israelite copper dagger blade. Time of Abraham and Joseph. Middle Bronze Age. 2000-1570 BC

7. Extracting copper from copper oxide a Transfer one spatula measure of copper(II) oxide to a hard glass test-tube. b Carefully add one spatula of charcoal powder on top of the copper oxide without any mixing. c Strongly heat these two layers for five minutes in a Bunsen flame. d Allow to cool and then look closely at where the powders meet in the test-tube. (Safety: See next slide)

8. Safety Safety spectacles must be worn. Copper (II) oxide is harmful. Avoid skin contact. Handle test tubes with a test tube holder. Stand hot test tubes in a rack. Don’t tip products down the sink at the end (Harmful to the environment). Wash your hands at the end.

9. Extracting copper from copper oxide a Transfer one spatula measure of copper(II) oxide to a hard glass test-tube. b Carefully add one spatula of charcoal powder on top of the copper oxide without any mixing. c Strongly heat these two layers for five minutes in a Bunsen flame. d Allow to cool and then look closely at where the powders meet in the test-tube.

10. Plenary In any chemical reaction: REACTANTS PRODUCTS What were the reactants? What were the products? So, what would the word equation be?

11. Smelting Copper http://www.youtube.com/watch?v=_OrBw4L490Y&feature=related http://www.youtube.com/watch?v=_OrBw4L490Y&feature=related http://www.youtube.com/watch?v=_OrBw4L490Y&feature=related