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Grade Content Book
C
3a
:
W
ha
t
ar
e
at
o
ms
lik
e?
1 D,C The nucleus is made up of protons and neutrons. P 75
Protons Neutron Electron
Charge +1 0 1
Mass 1 1 0.
0005
(zer
o)

2 B ­A* At
oms
are
neutral…

Page 2

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H
o
w
at
o
ms
co
m
bi
ne
­
Io
ni
c
bo
nd
in
g
8 D,C An
ion
is
a charged
atom
or
group
of
atoms,
eg.
C
l,
Na+
,
N O 2
3 .
P 79
Positive ions
for
m when
atoms
lose electrons.…

Page 3

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i
onsc
anmo
vei

nsol
uti
on(
whend
i
ssol
ved)
or

i
namol
tenl
i
qui
d(
whenme
l
ted)
soc
onduct

el
ect
ri
ci
ty
.
C
3c
:
Co
va
le
nt
Bo
nd
in
g
an
d
th
e
str
uc
tur
e
of
th…

Page 4

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1 D,C A
GROUP in t
he Per iodi
c Tabl
e i
s a
vert
ical
col
umn
of
elemen ts, al
l
these
element
s have
simi
l
a r
P 85
chemi
cal
properti
es.
6 A
PERIOD in
the
P er i
odi
c Tabl
e…

Page 5

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en
ts
2 D,C Group
7 el
ement
s ar
e cal
led
the
H al
ogens
. P 91
At
r
o om
temper
atur
e:
chlor
ine
is
a green
ga s,
br
omi
ne
is
an
orange
li
qui
d and
iodi
ne
is
a grey
sol…

Page 6

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em
en
ts
3 D,C Compounds
of
tr
ansit
ion
metal
s ar
e often
col
our
ed
: P 100
1 C opper compounds
are
blue
I
ron
(I
I)
compounds
are
li
ght
gr
een
Ir
on
(I
II
)
comp ounds
are
orange
/
brown
Tr
ansi…

Page 7

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3 B ­A* Met
als
conduct el
ectr
ici
ty
becau se the
delocalised electrons
can
move
easi
l
y. P 105
Di
sadvant
ages of
superconduct
o r
s.
7
o nly
w or
k at
ver
y l
o w t
emp e r
a t
ures
t…

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