C2c - Metals and Alloys 0.0 / 5 ? ChemistryMetals, metal ores and alloysGCSEOCR Created by: natalie27Created on: 16-12-13 11:53 53781246 Across 1. Copper is extracted by heating copper ore with ______, which removes the oxygen from the copper. (6) 4. Copper is found as an ___ which is copper combined with other chemicals and rock. (3) 5. This process purifies copper - pure copper needed for wiring and electronics. (12) 6. _____ alloys, remember shape - if bent, return to original shape. e.g. nitinol (nickel and titanium) (5) 7. When an electric current is passed, the copper moves from the impure copper _________ to the pure copper one. (9) 8. This is what copper ore is called. (9) Down 2. Mixture of metals. Has different properties to individual metals. (6) 3. This is the removal of oxygen from a substance. (9)
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