C1.3 metals and their uses
- Created by: frankie306
- Created on: 23-05-15 15:40
View mindmap
- C1.3 metals and their uses
- Extracting Metals
- found in the earth's crust
- Metal ore
- contains enough metal to make it economic to extract
- mined-concentrated before extraction
- unreactive metals
- found in their native state
- reactivity series
- best way to extract metal
- oxide of metals below carbon in the series can be reduced by carbon to give the metal element
- more reactive than carbon
- cannot be extracted from their ores using carbon
- Iron and steels
- Iron is extracted by reducing it using carbon
- inside a blast furnace
- pure iron
- too soft for it to be useful
- steel
- alloy from iron and other substances
- low carbon steel
- easily shaped
- high carbon steel
- very hard
- stainless steels
- resistant to corrosion
- Iron is extracted by reducing it using carbon
- Aluminium an titanium
- resist corrosion
- electrolysis of molten aluminium oxide to extract
- more reactive than carbon
- expensive
- extraction method
- large amounts of energy
- Extracting Copper
- smelting
- heating the ore
- electrolysis
- displacement using scrap iron
- bioleaching
- leachate = copper ions from waste
- bacteria feed on low grade metal ores
- scrap iron and electrolysis to extract copper from leachate
- phytomining
- plants absorb copper ions as they grow
- Then burnt
- metal extracted from ash
- smelting
- Useful metals
- Transition metals
- central block of elements in the periodic table
- useful for building and making things
- good conductors
- strong
- Copper
- bronze
- copper + tin
- resistant to corrosion
- strong
- brass
- copper + zinc
- pipes - non corrosive
- wires - good conductors
- bronze
- Aluminium
- low density metal
- many alloys available
- Gold
- alloying with copper
- more hardwearing
- jewellery
- alloying with copper
- Transition metals
- Metallic issues
- metals in construction
- benefits
- strong
- corrosion resistant
- good conductor
- drawbacks
- iron and steel rust severely
- pollutes earth
- expensive
- benefits
- metals in construction
- Extracting Metals
Comments
No comments have yet been made