AS Chemistry Checklist OCR spec A

Revision checklist for OCR specification A.

 

 

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Preview of AS Chemistry Checklist OCR spec A

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AS Unit F321: Atoms, bonds and groups
Module 1 Atoms and reactions
Done
Atoms
Descr
ibe
prot
ons,
neut
rons
and
elect
rons
in
ter
ms
of
rel
ati
ve
char
ge
and
rel
ati
ve
mass.
Descr
ibe
the
dist
ri
but
ion
of
mass
and
char
ge
wit
hin
an
atom.
Descr
ibe
the
cont
ri
buti
on
of
prot
ons
a nd
neut
rons
to
the
nucl
eus
of
an
atom,
i
n t
erms
of
at
omic
(prot
on)
number
and
ma ss
(nucl
eon)
number.
Deduce
the
number
s of
pr
otons,
neut
rons
and
elect
rons
in:
(
i) an
atom
given
it
s at
omi
c
and
mass
number
(
ii
)
an
ion
given
it
s at
omi
c
number
,
mass
number
and
ioni
c char
ge.
Expl
ain
the
ter
m isotopes
as
atoms
of
an
element
wi
th
dif
fer
ent
number
s of
neut
rons
and
dif
fer
ent
ma sses.
12
St
ate
that
C i
s used
as
the
standar
d measur
ement
of
r
elat
ive
masses.
12
Defi
ne
the
ter
ms
relative isotopic mass
and
relative atomic mass,
based
on
the C
s
c al
e.
Cal
cul
ate
the
rel
ati
ve
atomi
c
mass
of
an
element
gi
ven
the
rel
ati
ve
abundances
of
i
ts
i
sot
opes.
Use t
he t
erms relative molecular mass
and
relative formula mass
and
cal
cul
ate
v
a l
ues f
rom r
ela t
ive at
omic
ma ss es.
Done
Moles and equations
Expl
ain
the
ter
ms:
(
i) amount of substance
(
ii
) mole
(symbol
`
mol
')
as
the
uni
t
for
amount
of
subst
ance
23
(
ii
i
) t
he
Avogadro constant,
NA,
as
the
number
of
ent
it
i
e s
per
mol
e (
6.02
× 10
­1
mol) .
­1
Defi
ne and
use
the
ter
m molar mass
(uni
ts
g mol )
as
the
mass
per
mol
e of
a
s
u bst
ance.
Expl
ain
the
ter
ms:
(
i) empirical formula
as t
he si
mpl
est
w hol
e number
r
ati
o of
at
oms
of
each
el
eme nt
p re s
e nt
i
n a
compound

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Page 2

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Cal
cul
ate
emp i
ri
cal
and
molecul
ar
for
mul
ae
usi
ng
composi
ti
on
by
mass
and
per
cent
age c
o mposi
ti
ons.
Const
ruct
bal
anced chemi
cal
equat
ions
for
r
eact
ions
studi
ed
and
for
unf
ami
l
iar
r
eact
ions
given
react
ants
and
product
s.…read more

Page 3

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Use
a Roman
numeral
t
o i
ndi
cate
the
ma gni
tude
of
the
oxidat
ion
stat
e of
an
element
when
a name
may
be ambiguous,
e.
g.
nit
rat
e(I
II
)
and ni
tr
ate(V)
.
Wr
it
e f
ormul
ae
usi
ng
oxi
dat
ion
number
s.…read more

Page 4

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St
ate
the
number
of
el
ect
rons
that
can
fi
l
l
the
fi
rst
f
our
pr
inci
pal
quant
um
ener
gy
level
s
(
shel
ls)
.
Descr
ibe
an
orbi
tal
as
a r
egi
on
that
can
hol
d up
to
two
elect
rons,
wi
th
opposi
te
spi
ns.
Descr
ibe
the
shapes
of
s and
p or
bit
als.…read more

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CH4 and
N H4 (
tet
rahedr
al)
(
ii
i
) SF6 (
oct
ahedr
al)
(
iv) NH3 (
pyr
ami
dal
)
(
v) H2O (
nonli
near
)
(
vi) CO2 (
li
near
)
Predi
ct
t
he
shapes
of,
and
bond
angl
es
in,
mol
ecul
es
and
ions
anal
ogous
to
those
above.…read more

Page 6

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Module 3 The Periodic Table
Done
Periodicity
Descr
ibe
the
Per
iodi
c Tabl
e i
n t
erms
of
the
arr
angement
of
el
ement
s:
(
i) by
incr
easi
ng
atomi
c (
prot
on)
number
(
ii
) i
n per
iods
showi
ng
repeat
ing
tr
ends
in
physi
cal
and
chemi
cal
pr
oper
ti
es
(
ii
i
) i
n gr
oups
havi
ng
simi
l
a r
physi
cal
and
chemi
cal
pr
oper
ti
es.…read more

Page 7

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Expl
ain
var
iat
ions
in
mel
ti
ng
and
boi
li
ng
poi
nts
in
ter
ms
of
str
uct
ure
and
bondi
ng.
I
nter
pret
dat
a
on el
ectr
onic
str
uct
ures,
at
omic
radi
i,
f
ir
st
ioni
sat
ion
ener
gies,
mel
ti
ng
poi
nts
and boi
li
ng
p oi
nts
to
demonst
rate
per
iodi
cit
y.…read more

Page 8

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I
nter
pret
and
ma ke
predi
ct
ions
fr
om t
he
chemi
cal
and
physi
cal
pr
oper
ti
es
of
the
G r
oup
7
element
s and
thei
r
comp ounds.…read more

Page 9

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I
nter
pret
and
use
the
ter
ms:
(
i) homologous series
as
a ser
ies
of
organi
c compounds
havi
ng
the
same
f
unct
ional
gro up but
wi
th
each successi
ve
me mber
di
ff
eri
ng
by
C H2
(
ii
) functional group
as
a gr
oup
of
atoms
responsi
ble
for
t
he
char
act
eri
sti
c
reactions o f
a
compound.…read more

Page 10

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Expl
ain
the
atom economy
of
a r
eact
ion
as:
Expl
ain
that
addi
ti
on
react
ions
have
an
atom
economy
of
100%
wher
eas
subst
it
uti
on
r
eacti
ons ar
e l
ess
eff
i
cient
.
Car
ry
out
cal
cul
ati
ons
to
det
ermi
ne
the
atom
economy
of
a r
eact
ion.…read more

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