c1.3

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C1.3 METALS
C1.3.1 (a) C1.3.1
An ore is a (e)
rock that Electro
contains lysis is
enough of using
a metal to electri
make it city to
economic break
ally worth down
extracting a
substa
nce
The
metals
form
positiv
e ions
which
are
attract
ed to
the
negati
ve
electro
de.
C1.3.1 (c)
(d) (e)
Potassium Extracted The
Sodium from their proble
Calcium ore by ms
Magnesiu electrolysis with
m Because electro
Aluminium they are lysis
more are:
reactive 1. ex
than pe
carbon nsi
ve
2. us
es
a
lot
of
ele
ctri
cit
y/
en
er
gy
3. lot
s
of
car
bo

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CARBON C1.3.1
(d)
Reducti
on is
the
proces
s in
which
oxyge
n is
remov
ed
from a
substa
nce
What
happe
ns
inside
a blast
furnac
e?
Iron
oxide
is
reduce
d by
carbon
to
make
iron
C1.3.…read more

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Extracted
from their
ore by
reacting
Zinc them with
Iron carbon
Tin Because
Lead they are
Copper less
reactive
than
carbon
Silver C1.3.1
Gold (f)
Platinum Coppe
r can
be
extract
ed
from
its ore
by
Found pure smelti
in the ng (this
earth's crust is
Because when it
they are all is
unreactive heated
in a
furnac
e)
Coppe
r can
be
purifie
d by
electro
lysis
Metals are Heating copper C1.3
mined sulphide ore (g)
from the makes sulphur Resear
earth.…read more

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We
e
can use
noise two
polluti metho
on ds:
CO2
from
traffic
Phyto Bioleaching
mining bacteria are grown on
pla low-grade ores
nts the metals build up
are inside them
gr special chemicals are
ow added to make a
n leachate solution
on the metal is extracted
lo from this solution
w-
gra
de
or
es
the
y
ab
so
rb
the
me
tal
fro
m
the
soil
the
y
are
the
n
bur
nt
the
me
tal
is
ext
rac
te…read more

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Pros of Con
recycling s of
metals recy
it uses clin
less g
energy met
it als
saves
y
natural
o
resour
u
ces
(becau
h
se
a
there
v
is less
e
mining
)
t
less
o
waste
is
c
produc
o
ed
l
l
e
c
t
m
e
t
a
l
s
f
r
o
m
a
l
l
o
v
e
r…read more

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C1.3.1 (i) C1.3.1
and (h)
C1.3.…read more

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Iron is
more
nt to
reactiv
corrosi
e than
on copper
(extracted
using
Coppe
electrolysi
r +
s or
iron
displacem
copper
ent)
+ iron
They are
oxide
expensive
Oxide
to extract
because
uses a
lot of
energy
there
are
lots of
stages
to the
proces
s
C1.3.3 (a) C1.3.…read more

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C1.3.2 (c) D C1.3.2 (b)
Pure i Mixing carbon
metals a with iron makes
such as g steel
iron , zinc, r Low carbon steel
lead, a contains iron with
copper, m 0.1% carbon
are too s It is malleable
soft to use
because all High carbon steel
the atoms contains iron with
are the 1.5% carbon
same size.…read more

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