Metals The Extraction Uses Properties Flashcards
metal ore
a rockwhich contains enough metal to make it profitable to extract the metal
methods of extraction 3
reduction with carbon
electrolysis
displacement reactions
Metals lower than carbon on the RS
less reactive than carbon
extracted from their oxides by reduction using carbon
Metals higher than carbon in RS 2
more reactive than carbon
have to be extracted using electrolysis
reduction with carbon 2
metal oxide reduced in a boat furnace to make a metal
metal oxide is less reactive than carbon so when the metal oxideand carbon react the oxygen is removed leaving just the metal
copper extraction using carbon 3
smelting
copper produced is impure
electrolysis used to purify
electrolyte 3
liquid to conduct the electricity
often metal salt solutions made from the pre
has free ions which conduct electricity
purification of copper
positive Electrode made of impure copper electrons pulled off copper atoms at the positive electrode causing them to go into the solution as Cu2+ ions
Cu2+ions move towards the negative Electrode,gain electrons and turn back into copper atoms
impurities are dropped as sludge at the positive electrode
extracting copper from low grade ores
bioleaching
phytomining
bioleaching
using bacteria to separate copper from copper sulfide
bacteria get energy from the bond between copper and sulfur separating them in the process
lechate is the solution produced by the process contains the copper
phytomining3
growing plants in soil that contains copper
plants can’t use of get rid of the copper so it builds up in their leaves
plants harvested and burned copper can be collected from their ashes
pros of bio and phyto 4
cheap
much smaller environmental impact
require less energy
phyto is more carbon neutral
extraction by displacement
if you put a reactive metal into a solunion of a dissolved metal compound the reactive metal will replace the less reactive metal in the compound
negative impacts of metal extraction4
mining ores is bad for environment
increased traffic and noise
destroys habitats
takes alot of energy from burning fossil fuels
properties and uses of copper
good conductor of electricity hard and strong also be bent doesn't react with water good for plumbing pipes and electrical wires
propertiez and uses of titanium4
low density metal
very strong
corrosion resistant
replacement hips
properties and uses of aluminium 5
corrosion resistant has a low density lightweight forms hard alloys aeroplanes
alloy
mixture of two or more metals
cast iron4
impure iron from the impurities created out the blast furnace
used for ornamental railings
can with stand being compressed
brittle
conversion of pure iron to steel
steels are formed by adding small amounts of carbon to The iron
low carbon steel
easily shaped
cat bodies
high carbon steel3
very hard inflexible
blades for cutting tools
bridges
stainless steel
corrosion resistant
cutlery
containers for corrosive substances
bronze =
copper and tin
cupronickel
copper and nickel
