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The extraction of metals from ores, alloys and the properties of metals as well as there uses
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chemistry
metals
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Catherine Irvine
hace más de 8 años
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5266135
mind_map
2018-03-07T16:48:35Z
Metals and their Uses
Extracting
metals
Ores
Rocks which contain enough metal to
make extraction economically viable
Ores may be
concentrated first
Methods of extraction
Electrolysis
Reduction
Smelting
Other
Phytomining
Bioleaching
Metals less reactive than carbon
Metals more reactive than carbon
OIL RIG
heating
with
carbon
Oxidation is loss
Reduction is gain
Positive ions move away from the positive electrode and towards the negative electrode
The negative electrode gains positive ions
CuO +H2 = Cu + H20
Used for copper
Uses plants to absorb metal compounds
Plants are burnt to produce ash that
contains compounds
Uses bacteria to produce leachate solutions which
contain metal compounds
Alloys
most metals used in every day life are alloys as pure metals are too soft by themself
Mixing metals makes them harder
Iron
Iron from the blast furnace is 96% pure iron
The impurities make it brittle
Most irons are mixed with carbon to make steel
Low carbon steels are easily shaped
High carbon steels are hard
Stainless steals are resistant to corrosion
Properties and uses of
metals
Transition metals
Elements in the middle of the periodic
table
Properties
Can be bent or hammered into
shape
Good conductors of heat
Good conductors of electricity
Useful structural materials
Copper
Useful for plumbing and electrical wiring
Doesn't react with water
Is a good conductor of heat and electricity
Is hard but malleable
enough to be used for pipes
Aluminium and Titanium
Useful metals
Resistance to corrosion
Low density
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5266135
mind_map
2018-03-07T16:48:35Z
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