, Quantitative chemistry:
Polyatomic ions:
5042
-
Hydroxide Sulfate
_
OH
5032
'
_
NO } Nitrate sulfite
52032
- -
Noz Nitrite Thiosulfate
2-
Cr20 >
_
Mn 04
Permanganate Dichromate
(032
-
-
1-1103
Hydrogen carbonate carbonate
43
'
PO
1-1504 Hydrogen sulfate
_
phosphate
( 1-1300 NH4+
_
Acetate -
.
mmonium
" "
_
ate indicates atoms
4 oxygen
.
" "
-
ite indicates atoms
3
oxygen
.
" "
-
Ide indicates an ion Ot a non metal .
Diatomic elements: H2
,
Nz ,
02 ,
Fz ,
(l 2
,
Brz ,
12
Law of constant composition: A spesitic chemical compound always consists of the same
elements in the same ratio .
Law of conservation of mass: Total mass of particles before a reaction and after a
reaction remain constant
A spesitic number of particles of
Law of volume ratio: any gas occupies the same
volume at STP .
Group:1 -
lkali metals
Group: 2 Alkali earth metals
Group: 7 Halogens
Group: 8 Noble
gas
, UNIT :
Quantitative chemistry:
rticles ementary unit :
ement :
toms a al 77
↳ Bragg aim
tiatomic cements : molecule
• Maa - -
M
( Ova Cl 7L 77 CU L 7ns
ent compound : molecule z
C MC M
Cl
Ionic compound : ions ,
counted in
-
Mba Be
B- ME so
formula units .
z
7 ECU C
77 ecu alms
e
0
:
N
nuantityol matter n f Ccl 7C suoslcnce n f o
n f Cl is
that has the same number of
> articles as there are atoms
inizg M fan cement Atomic mass of cement in
grams
1 MOI f
of carbon 12 .
g 24g
1 MOI f '
b
Mo 6. 2
23
207g
1m01 I Clz =
g
.
gadro 's constant
diatomic
23
.
gadro 'S constant 6 .
2
MO / Of compound formula
" "
Relative :( in
comparison to carbon mass
g
as no unit .
1m01 I act 23+35.5 58.5g _
3 elative atomic 1m01 f a 23+16+1
g
mass
-
: r
, -
1m01 f
r a 23 z 8g -
ocular formula mass :
ass of one mol Of a substance
MOI a 6.02 023 atoms
Relative mass d- a molecule or MO / all 6.02 023 atoms at
compound r .
unit .
2ND @
Sass
1-120=18 tell -14.5
; r =
r
1- 7cL she -
ecl eat mic mass f CU eemenl
meculercmpound -
unity .
Cu 6353
1-120=189 ; KCI
-14.5g
=
Tal she -
eat em ecua
-
mass f Clc aenlcmp und
mass m
ing
-_
molar mass __ M moi
'
Cl 35,5 36,5
g.
efrmu f gs mound
moth in molt 3 .
rat she real amass ncc
m
n
r
gs 3 6 2
Polyatomic ions:
5042
-
Hydroxide Sulfate
_
OH
5032
'
_
NO } Nitrate sulfite
52032
- -
Noz Nitrite Thiosulfate
2-
Cr20 >
_
Mn 04
Permanganate Dichromate
(032
-
-
1-1103
Hydrogen carbonate carbonate
43
'
PO
1-1504 Hydrogen sulfate
_
phosphate
( 1-1300 NH4+
_
Acetate -
.
mmonium
" "
_
ate indicates atoms
4 oxygen
.
" "
-
ite indicates atoms
3
oxygen
.
" "
-
Ide indicates an ion Ot a non metal .
Diatomic elements: H2
,
Nz ,
02 ,
Fz ,
(l 2
,
Brz ,
12
Law of constant composition: A spesitic chemical compound always consists of the same
elements in the same ratio .
Law of conservation of mass: Total mass of particles before a reaction and after a
reaction remain constant
A spesitic number of particles of
Law of volume ratio: any gas occupies the same
volume at STP .
Group:1 -
lkali metals
Group: 2 Alkali earth metals
Group: 7 Halogens
Group: 8 Noble
gas
, UNIT :
Quantitative chemistry:
rticles ementary unit :
ement :
toms a al 77
↳ Bragg aim
tiatomic cements : molecule
• Maa - -
M
( Ova Cl 7L 77 CU L 7ns
ent compound : molecule z
C MC M
Cl
Ionic compound : ions ,
counted in
-
Mba Be
B- ME so
formula units .
z
7 ECU C
77 ecu alms
e
0
:
N
nuantityol matter n f Ccl 7C suoslcnce n f o
n f Cl is
that has the same number of
> articles as there are atoms
inizg M fan cement Atomic mass of cement in
grams
1 MOI f
of carbon 12 .
g 24g
1 MOI f '
b
Mo 6. 2
23
207g
1m01 I Clz =
g
.
gadro 's constant
diatomic
23
.
gadro 'S constant 6 .
2
MO / Of compound formula
" "
Relative :( in
comparison to carbon mass
g
as no unit .
1m01 I act 23+35.5 58.5g _
3 elative atomic 1m01 f a 23+16+1
g
mass
-
: r
, -
1m01 f
r a 23 z 8g -
ocular formula mass :
ass of one mol Of a substance
MOI a 6.02 023 atoms
Relative mass d- a molecule or MO / all 6.02 023 atoms at
compound r .
unit .
2ND @
Sass
1-120=18 tell -14.5
; r =
r
1- 7cL she -
ecl eat mic mass f CU eemenl
meculercmpound -
unity .
Cu 6353
1-120=189 ; KCI
-14.5g
=
Tal she -
eat em ecua
-
mass f Clc aenlcmp und
mass m
ing
-_
molar mass __ M moi
'
Cl 35,5 36,5
g.
efrmu f gs mound
moth in molt 3 .
rat she real amass ncc
m
n
r
gs 3 6 2
