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Page 1

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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…

Page 2

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(
ii
) molecular formula
as
the
act
ual
number
of
at
oms
of
each
element
i
n a
molecule.
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…

Page 3

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(
i) el
ect
ron
tr
ansf
er
(
ii
) changes
in
oxi
dat
ion
number
.
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…

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,…

Page 5

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+
(
ii
) 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…

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…

Page 7

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(
ii
) 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…

Page 8

Preview of page 8
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.
Contr
ast
the
benefi
ts
of
chl
ori
ne
use
in
w at
er
tr…

Page 9

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(
vi) skel
etal
f
ormula
as t
he si
mp l
if
ied
organi
c f
ormul
a,
shown by
removing
hydr
ogen
at
oms
fr
om al
kyl
chai
ns,
l
ea vi
ng j
ust
a car
bon
skel
eton
and associ
ated
f
uncti
onal
groups,…

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…

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