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6 Cards in this Set
- Front
- Back
List examples of native metals and metal found in ores. |
Gold, silver, copper, iron, cobalt and nickel. |
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Define an ore. |
A naturally occurring solid material from which a metal or valuable mineral can be extracted profitably. |
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Describe reduction in terms of the removal of oxygen from a compound. |
Reduction is the loss of oxygen from a substance. For example, copper oxide can be reduced to form copper if it is reacted with hydrogen: |
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Using the reactivity series of metals identify which metals can be extracted from their oxides by reduction with carbon. |
Zinc, iron, tin, lead and copper are extracted by heating in the blast furnace with carbon (displacement reaction). |
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Identify the reduction process from this description: |
Reduction reaction - Getting rid of the oxygen, leaving the metal. Extracted by heating with carbon in the blast furnace (reactivity series). |
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Write a balanced equation to show the reduction of a metal oxide. |
magnesium + oxygen → magnesium oxide 2Mg + O2→ 2MgO |