Chemistry 3 (C3) Edexcel Crib Sheet

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This is a C3 Crib sheet for the EDEXCEL specification, all higher tier.

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Frankencrib
Unit C3
Topic 3 -- Chemical Detection
I
n t
h i
s t
opic
an al
yti
cal
chemistry
is
used to
ena bl
e you t
o widen
a nd
de epen your
experi
en ce
of
react
ion chemist
ry and
relat
ed
calcul
ati
on s.
You mu st
come
to
un der
stand t
ha t
t
he fi
rst
st
ep ,
when an uni
de nt
if
ied
sub st
ance
is
found,
i
s
t
o di
sco ver
wha t
t
he substance cont
ains.
The
reacti
ons of
i
on s
i
n
solut
ion pr
o vi
de ext
ensive
opport
un i
ty
for
pract
ical
work and consol
idati
on of
the
idea t
hat
g i
ven i
ons have charact
eri
sti
c
r
ea ct
ions
an d
that
these r
eacti
on s
can be used t
o i
den t
if
y t
hem.
The
fi
nal
cha l
l
e nge
in
thi
s
ar
e a,
t
o i
d ent
if
y an unknow n
ioni
c comp ound,
can give
you sati
sfact
ion
an d
proof
o f
your
new found abi
li
ti
es!
You have been i
ntr
o duced t
o i
onic
eq uat
ions and
mu st
ap pr
eciat
e
that
these
e quat
ions show
onl
y t
h e
ions
w hi
ch
react
to
give,
or
are produced f
rom, non i
onic
products
an d
p r
ecipi
tat
es.
Calcul
ati
on s
w i
l
l
h el
p you
to underst
an d
that
amo unts
of
su bst
ance s
can be mea sur
ed i
n
moles of
part
icl
es as
w el
l
as i
n
grams
or
a s
a numb er
of
pa r
ti
cles.
The i
dea that
one mo l
e of
molecules
of
a ny
gas occupies
the same
volume
under t
he same
con di
ti
ons of
temp er
ature
and pr
essu r
e enables
yo u
to
d o
calcul
ati
on s
invol
ving
the pr
o duct
ion of
gases f
rom soli
d and
l
iqui
d react
an t
s.
A n
und er
standing
of Avogadro's
law enabl
e s
calcul
ati
ons for
react
ions
i
nvolvi
ng solel
y gaseous r
ea ct
ants
a nd
products.
You can i
nvesti
gate appl
icati
ons of
quali
tat
ive
a nd
qu ant
it
ati
ve analysi
s i
n f
iel
d s
such as
f
orensic
science,
quali
ty
con t
rol
and r
e sear
ch .
The t
opic
w i
ll
al
so hel
p
you t
o app r
eciat
e t
h e
need f
or accur
a cy
and rel
iabi
li
ty
of
d at
a.
Glossary
You wi
ll
be
expect
ed t
o
be abl
e t
o r
ecal
l,
expl
ain,
descr
ibe
and
use
a ppr
opri
atel
y t
he
fol
lowi
ng
words
and phr
ases:
aci
d fl
ame
test
mole r
eactant ani
on indi
cat
or
pr
ecipi
tat
ion ti
tr
ati
on Avogadro'
s l
aw i
on pur
it
y
base ioni
c subst
ance qual
it
ati
ve cat
ion
molar
vol
ume
quanti
tati
ve
You will be expected to:
·
recal
l
th e f
o r
mu l
ae of
a l
l el
eme nt
s and
simple
comp ounds
in t
he t
opic
­ LEAR N THEM
·
represe nt
chemical
rea cti
ons by
w or
d equat
ions
and si
mp l
e balanced
equati
ons and use
st
ate symb o l
s (
s),
(
l),
(
g )
a nd
(aq)
·
w r
it
e ba l
an ced
equ at
ions
to descr
ibe
and expl
ain
a wide
range of
r
eacti
ons i
n t
his
topi
c
·
w r
it
e ba l
an ced
ioni
c eq uati
ons t
o descri
be
and
explai
n a
w i
de r
ange of
react
ions
in
thi
s
t
op i
c.
At the end of this unit you must be able to describe and explain the following
statements and carry out the tasks indicated:
What is present?
·
why su bst
an ces
n eed
to be
ident
if
ied
and thei
r
puri
ty
deter
mined
·
anal
y sis
ma y
b e qual
it
ati
ve or
quanti
tat
ive
·
i
onic substances are
identi
fi
ed by
ident
if
ying
each t
ype of
i
on t
hey
cont
ain
·
why the t
e st
f
or each i
on must
b e
unique
·
pr
ecip i
tati
on r
e act
ions f
orm t
h e
basis
of
some
test
s f
or
ions
·
LEARN t
he
test
s f
or
the
fol
lowi
ng
ions
in
sol
ids
or
sol
uti
ons:
C3 J Barker (SCHS) 2010

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H+u
sing
a ci
d /base
indicat
ors and typi
cal
aci
d react
ions
Na +,
K +,
C a2+,
C u2+u
si
ng f
lame t
ests
Al ,
C3
a,
+
Cu,
Fe, F2
e,
+
NH
2+
4 u
s
2
i
n
+
g so
3
d
+
i
um +
hydr
oxide
solut
ion
CO 3 us i
n g
d i
l
2
u
t
e
a c i
d and
iden t
if
ying
the
carbon…read more

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f
oll
owing
w ords
and phr
ases:
al
cohol
det
ergent immi sci
ble sol
vent al
kali
el
ectr
ode i on
s
u r
fact
ant a l
kali
me t
al el
ectr
olysi
s misci
ble t
ransi
ti
on met
al
c
a r
boxyli
c aci
d el
e ct
rol
yte oxi
dati
on cat
alyst
est
er
pi
gme nt Contact
pr
ocess
f
lavour
ing r
educti
o n cosmeti
c
har
d water…read more

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Alkali metals and their compounds
·
that al
k al
i
me tal
s are
s oft
and have comp ar
a t
ivel
y l
ow me l
ti
ng and
boil
ing
point
s
·
the reacti
on s
of
li
thium, sodi
um an d
po t
assium wit
h water
to
form
hyd r
oxides
and hydr
ogen
gas
·
the u s
e
of
so di
um carbo nate
in
producing gl
ass and washi
ng
soda cr
ystal…read more

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T he ans wer
w ould
b e
e x
p ected t
o
draw
on sci
enti
fi
c know ledge
to give r
e asons or
e xpl
ana ti
on s
for
the i
nforma ti
on or dat
a given.…read more

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Topic 3: Chemical detection
1 = I cannot do this 2 = I'm not sure 3 = I can do this
Learning outcome At the After I After I
start have have
studied revised
explain the importance of a reliable, 1 2 3 1 2 3 1 2 3
pure water supply in everyday life
describe how water is used in everyday 1 2 3 1 2 3 1 2 3
life and explain why it is important not
to waste it
explain why…read more

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explain how precipitation reactions can 1 2 3 1 2 3 1 2 3
form the basis of some tests for ions
describe the tests for hydrogen 1 2 3 1 2 3 1 2 3
(H+) ions using acid/base indicators
describe and explain the typical 1 2 3 1 2 3 1 2 3
reactions of acids, using balanced
formulae equations
describe the test for hydroxide (OH­) 1 2 3 1 2 3 1 2 3
ions using acid/base indicators and the
reaction…read more

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explain the importance of using the 1 2 3 1 2 3 1 2 3
correct formulae for elements and
compounds
describe chemical reactions using 1 2 3 1 2 3 1 2 3
balanced formulae equations
write ionic equations for the 1 2 3 1 2 3 1 2 3
reactions of acids and tests for
other ions
explain that the amount of a substance 1 2 3 1 2 3 1 2 3
present in a solution can be found by
experiments…read more

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explain that to produce required 1 2 3 1 2 3 1 2 3
amounts of product, chemists must be
able to calculate how much reactant to
use
calculate the masses of substances 1 2 3 1 2 3 1 2 3
involved in reactions, given the relevant
equation
use Avogadro's law to calculate the 1 2 3 1 2 3 1 2 3
volumes of gases involved in reactions,
given the relevant equation
calculate the volume of a given mass of 1 2…read more

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Topic 4: Chemistry working for us
1 = I cannot do this 2 = I'm not sure 3 = I can do this
Learning outcome At the After I After I
start have have
studied revised
state the typical physical properties of 123 123 123
transition metals such as iron and
copper ­ high melting points, good
conductors of heat and electricity and
high density
link these properties to the uses of 123 123 123
these metals
describe the uses of transition metals 123…read more

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