Flashcards
Limestone, metals and building materials
Cards in this deck (13)
- 1CementLimestone is heated with clay
- 2ConcreteCement mixed with sand, (water) and aggregate
can be reinforced with steel - 3MortarCement and
sand
weaker than concrete - 4OresMined,
May be concentrated/purified
has to be economical to extract
typically metal oxides - 5Metal extractionIf less reactive with carbon:
extracted by reduction using carbon
More reactive than carbon?
Electrolysis - 6Copper extractionCan be extracted by heating (smelting)
purified by electrolysis - 7Aluminium and Titanium extractionElectrolysis extraction
>lots of evergy used
>many stages in the process
Titanium extracted by displacement - 8Cast Iron96% iron
High strength in compression
Brittle
Manhole covers, etc. - 9SteelsLow carbon = easily shaped
High carbon = hard
Stainless steels (with chromium and nickel) = corrosion resistance - 10Transition metals AdvantagesMalleable, ductile to heat and electricity
- 11Copper Uses + advantagesElectical wiring and pipes
Good conductor
Malleable yet hard
Unreactive with water - 12Aluminium/titanium Uses/advantagesLow density
Corrosion resistant
hip replacements etc. - 13Alloys (General)Make harder (different sized atoms disrupt regular structure)
Differing properties
All metals bond
e.g brass, steels, etc.
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- An overview of various materials in C1 AQA
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- Emily Y :)
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