Sources and origins (AQA GCSE Design and Technology): Flashcards
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Ferrous metals
Ferrous metals
Metals containing iron
Non-ferrous metals
Non-ferrous metals
Metals that don't contain iron
Alloys
Alloys
Mixtures of 2+ metallic elements
Ores
Ores
Rock formations containing metal compounds
Iron ore sources (types)
Iron ore sources (types)
Magnetite and hematite
Aluminium ore source
Aluminium ore source
Bauxite
Extraction method depends on
Extraction method depends on
Metal's reactivity level
Metals using carbon reduction
Metals using carbon reduction
Less reactive: zinc, iron, tin
Metals using electrolysis
Metals using electrolysis
More reactive metals, e.g., aluminium
Why carbon reduction works
Why carbon reduction works
Carbon is more reactive than the metals being extracted
Iron extraction temperature
Iron extraction temperature
Approximately 2000°C
Cryolite's role in Al extraction
Cryolite's role in Al extraction
Dissolves aluminium oxide, reduces temp needed
Why Al needs electrolysis not carbon
Why Al needs electrolysis not carbon
Holds oxygen stronger than carbon can remove
Two main metal extraction methods
Two main metal extraction methods
Carbon reduction and electrolysis