Summary
Summary A level Chemistry OCR B Topic sheets
- Module
- Elements of life
- Institution
- OCR
This is a collection of summary sheets for A level Chemistry, exam board OCR B, I achieved an A* using these notes
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2 1 7 .. atomic structure relative atomic mass = weighed mean
Elements of life
......
(
compared 1/12th
&
mass of one atom to C-12 .
sub atomic particles : &
"
Proton : relative mass 1 : + 1 relative isclepic
mass= the mass of
e
neunen : 1 : 0
isolepe compared to 1/12m C-12
elechen :
O/usmall : -1
relative icleavar mass= theg marg
recule compared to 1/12th
atomic a carsen 12 .
susion two
light atemic nudei fuse to
gener germing
-
number z number osprotons nucleur
= =
=
mass number =
A =
protons + neurons
single heavier nucleus .
Isotope atoms of re same element huma diferent mass number
g HH He
=
but same atemic number .
(ducement number of neunens)
important complexions : ionic equations excited
whting elechon electo
: ·
,
higher energy level w
5042- =
sulfate equation =
Pb(NO3)c(9a) + 2 NaCl (a) >PDCI2(s) +
[NaNOz(aa) down , emit
,
&
energy g
Co =
carbonate coloured lines .
Mos" 20a 2a
+ "
NO
+ +
+
ammonium
Pb + + + x1 -
PDC2 + + 2 >
-
Get cider at
NHp
=
Noz
=
= nitrale(v)
separate (a)
into icns
PD*
+
+ 2C1
-
>
PDCI (s) &
PO3- =
phosphate energy level
elechon configuration
shells
same less : :
M
2 elections of
energy
Lithium S Shell =
Sphere holds 1x 2 electrons opposite spiri
3
Crimson
-
:
calcum : buicured
p-shel
=
dumber holds 3 2 elections
in each orbital
↓
↓
G
x -
soaum :
yelew =
6 emission =
arrows
copper :
green order =
Barum :
apple green d-shell =
5 x d Orbitals =
5x2 =
10 elections
152523534523d4p 5524d
%
Paarum Wac
exceptions
:
:
24Chmm4s
amantG substance -
45'3d10
&
L
snapes of molecules
molass
1800
- * no election lone pair
Insoluble compounds
water of
* 2 areas g electen denting
Banum , Calcum lead suver,
cryusacion :
00
Linear
>
,
, sugate method =
> suner , lead halide empty dry crable + lid
weigh an
O < no lone pair > all carbonates > add
2g of hydrated y
$100 Save
a
hydexes (except G2 , e ammonium) > heat
shengly men a new to coo
planar 120 heat
again (reweigh uni con
·
tests for ions : Io
blue
Cu
< no lone pair desired as :
the enoneupy chang
P 109 50
nydexe e a
-
soaum
& >4 areas gelecnondeusing of
gaseous atoms to form one me
·Go retanedal orange
potassium iodide
O 109 50 Pb't Ionischen trend :
energy
.
yellow
across a penod :
Increases , as nude
handes G2 - G3
pair
G5
XX > 1 lone =-2 50 .
:
suner runate extra +
2p3
Is
-1She
=
O Dipyramidal
3 bonding pou
*
so , banumchionde white
O 1070 down a gloup= decreases (mor
Group a reactions
↓ second ionisaen first io
XXXX Dent reactivity w/ water increases down
grap.
<
>
enmapy
pour enm
#&
> two lone
50L
souburg yny dange
a
-
104 50
104 58
.
-
.
g G2 +
02 >
-
G
X
↓
octanedral Thermal
scakery G 2 carbondles :
Increase dan G2 G2 +
H20 +
G
charge densing decreases
&
.
> 980 >
-
les duremen carbenate ch
y
>
-
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