AQA Chemistry 3 Keywords

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Modul
e 15
­ Prepar
ing
and
anal
ysi
ng
Scheme of Lessons
Lesson Title Comments
The
rul
es
of
so l
ubi
li
ty
in wat
er
1 Sol
ubi
li
ty
of
sal
ts and
how i
t
is
me asur
ed
Wri
ti
ng ba lanced
symbol
2 Maki
ng
sol
ubl
e sal
t
s
equat
ions
Wri
ti
ng bal
anced
symb ol
3 Maki
ng
insol
ubl
e sal
ts equat
ions
and
ioni
c equat
ions
Hydr
o g en,
oxygen,
car
bon
Met
hods for
col
lect
ing
and
4 di
oxi
d e ,
chl
ori
ne and
other
i
dent
if
ying
gases gases
Fl
ame
test
s f
or
G ro up
1
metal
s and
ident
if
y ing
other
5 Test
s f
or
ions cat
ions
usi
ng sodiu m
hydr
oxide
solut
ion
Test
ing
ha rdness
in
wat
er
and
6 Har
d wat
er methods
to
remove
har
dness.
The
mole,
r
eact
ing
masses
7 Quant
it
ati
ve
chemi
str
y and
gas
vol
ume
8 Ti
tr
ati
on Concent
rat
ion
of
sol
uti
ons

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Keywords you must know
Acid A
compou nd
that
pr
oduce s
hydr
ogen
cat
ions
(posi
ti
ve
char
ged
i
ons)
i
n aqueous
solut
ion.
Anion A
negati
vel
y char
ged par
ti
cl
e produ ced
as
a r
esul
t
of
gai
ning
el
ect
rons
(usual
ly
nonme t
al
ions)
.
Atom The
smal
lest
par
ti
c l
e of
an
element
t
hat
can
take
par
t
in
a
chemi
cal
r
eacti
on.…read more

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Na+
(
aq
)+
2OH
(
aq
)+
Cu2+
(
aq
) +
SO 2
4 (aq
)
2Na+
(
aq
) +
SO 2
4 aq
)+
Cu(
O H)2
(s
)
2OH
(
aq
)+
Cu2+
(
aq
)
Cu(
O H)2
(s)
[i
oni
c equat
ion
]
Ion A
char
ged
par
ti
cl
e…read more

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Meniscus The cur
ved appear
ance of
li
quid
seen
in
a pi
pet
te,
measuri
ng
cyl
i
n der
or
buret
te.
The level
of
t
he
li
qui
d
is
measured
to
the
bot
tom of
the
me ni
scus.
Molar mass The
mass
of
1 mol
e of
any
subst
ance.…read more

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Relative Thi
s i
s t
he aver
ag e mass
of
the
element
expr
essed i
n t
erms of
atomic mass t
he mass of
1/
12
th
of
t
he
ma ss
of
isot
ope
of
carbon
that
has
a
(Ar) mass of
12.…read more

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Relative The
sum of
the r
elat
ive
atomic
ma sses
of
all
t
he at
oms
present
molecular i
n a
molecule
of
an el
eme nt
or
comp ou nd.
T hi
s
is
als
o
cal
led
mass t
he r
elat
ive
formula
ma ss
(RFM),
e.g.…read more

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Titration The
me t
hod used
to
react
an
acid
w i
t h
an al
kal
i
so
that
onl
y a
sol
uti
on
of
salt
and
w at
er
are
produce d.
An
indi
cat
or
is
used t
o
det
ermine
the
point
of
neut
ral
isat
ion.
Water of Wa t
er
that
i
s an
essen t
ial
par
t
of
the st
ruct
ure
o f
some sal
t
crystallisatio cr
ystal
s.…read more

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