Extraction of Metals & Reduction (AQA GCSE Chemistry): Flashcards
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What is metal extraction?
What is metal extraction?
Obtaining pure metals from ores
What are ores?
What are ores?
Naturally occurring metal compounds
How most metals occur in nature
How most metals occur in nature
As oxides
What does reduction remove from metal oxides?
What does reduction remove from metal oxides?
Oxygen
What determines metal extraction method?
What determines metal extraction method?
Reactivity Series
Metals extracted by carbon reduction
Metals extracted by carbon reduction
Less reactive than carbon (e.g. iron)
What is smelting?
What is smelting?
Heating metal oxides with carbon
Example of metal extracted by carbon
Example of metal extracted by carbon
Iron
Method for highly reactive metals
Method for highly reactive metals
Electrolysis
Why is electrolysis expensive?
Why is electrolysis expensive?
Energy-intensive
Examples of native metals
Examples of native metals
Gold and platinum
Why are native metals found pure in nature?
Why are native metals found pure in nature?
Very unreactive; don't form ores