What’s in a name?
• When two people use different names for
the same thing, misunderstood words are
apt to happen. The British and Americans
often get confused.
American English
American English
Find the bonnet.
British English
British English
Find the boot.
Which is the chemist and which is the pharmacist?
In Ireland and England, the people who Americans
call pharmacists are called chemists
British English
American English
Plaster: American
English
Plaster: British English
Which is plaster and which is a band-aid?
Kerosene:
American English
Paraffin: British
English
Paraffin:
American English
Nomenclature
• A System of Naming Compounds
• Compounds are two or more atoms of
different elements bonded together.
• Even though the gases O2, N2, F2, and Cl2
travel in pairs, their names are simply
oxygen, nitrogen, fluorine, and chlorine.
METALS
vs. Non-METALS
F2 & Cl2 (Fluorine & chlorine gas)
HF(g) Hydrogen Fluoride
HCl(g) Hydrogen Chloride
H2S Dihydrogen Sulfide
HCN – Hydrogen cyanide
NO - NO2- NO3 - N2O
Cl2O dichlorine monoxide
NH3 Ammonia
PCl3 Phosphorus trichloride
In order to be effective in using
prefixes to name compounds
containing two non-metals, these
prefixes must be committed to
memory:
mono- 1
di2
tri3
tetra- 4
penta- 5
hexa- 6
hepta- 7
octa8
nona9
deca- 10
undeca- 11
dodeca- 12
Example #1-Names to Formulas
I’m a Binary
Compound
Sulfur trioxide
1. Write symbols of elements
2. Write number of atoms
S1O3
If no prefix, then 1 is
implied
andFormula
not written
Final
Example #2-Names to Formulas
I’m a Binary
Compound
dichlorine heptaoxide
1. Write symbols of elements
2. Write number of atoms
Cl2O7
Final Formula
Example #3-Names to Formulas
I’m a Binary
Compound
oxygen difluoride
1. Write symbols of elements
2. Write number of atoms
O1F2
If no prefix, then 1 is
Formula
implied Final
and not
written
Example #4-Names to Formulas
I’m a Binary
Compound
dinitrogen tetraoxide
1. Write symbols of elements
2. Write number of atoms
N2O4
Final Formula
Example #5-Names to Formulas
I’m a Binary
Compound
phosphorus pentachloride
1. Write symbols of elements
2. Write number of atoms
P1Cl5
If no prefix, then 1 is
Final
implied
andFormula
not written
Example #6-Names to Formulas
I’m a Binary
Compound
dinitrogen monoxide
1. Write symbols of elements
2. Write number of atoms
N2O 1
If no prefix, then 1 is
Final
implied
andFormula
not written
Example #7-Names to Formulas
I’m a Binary
Compound
carbon monoxide
1. Write symbols of elements
2. Write number of atoms
C1O 1
If no prefix, then 1 is
Final
implied
andFormula
not written
Example #8-Names to Formulas
I’m a Binary
Compound
sulfur hexafluoride
1. Write symbols of elements
2. Write number of atoms
S1F6
If no prefix, then 1 is
Final
implied
andFormula
not written
Example #10-Names to Formulas
I’m a Binary
Compound
dinitrogen trisulfide
1. Write symbols of elements
2. Write number of atoms
N 2S 3
Final Formula
Examples #1-
Formulas to Names
1. Write names of elements
2. Write number of atoms
CCl4
I’m a Binary
Compound
monocarbon tetra chloride
ine
If first prefix is mono, it is
Final Name
implied and not written
Examples #2-
Formulas to Names
1. Write names of elements
2. Write number of atoms
XeF3
monoxenon
I’m a Binary
Compound
ide
tri fluor ine
If first prefix is mono, it is
Final Name
implied and not written
Examples #4-
Formulas to Names
1. Write names of elements
2. Write number of atoms
AsI3
I’m a Binary
Compound
ine
monoarsenic triiod ide
If first prefix is mono, it is
Final Name
implied and not written
Examples #6-
Formulas to Names
1. Write names of elements
2. Write number of atoms
IF5
I’m a Binary
Compound
ine
monoiodine pentafluoride
If first prefix is mono, it is
Final Name
implied and not written
Examples #8-
Formulas to Names
1. Write names of elements
2. Write number of atoms
N2S5
I’m a Binary
Compound
di nitrogen pentasulfide
ur
Final Name
Examples #9-
Formulas to Names
1. Write names of elements
2. Write number of atoms
SiCl4
I’m a Binary
Compound
ine
monosilicon tetrachloride
If first prefix is mono, it is
Final Name
implied and not written
Practice Problem #1
ClF3
Choose the correct name for the compound
1. carbon iodine trifluoride
2. chlorine trifluorine
3. chlorine trifluoride
4. chlorine tetrafluoride
5. none of the above
Element List
Prefixes
next problem
Practice Problem #2
arsenic pentabromide
Choose the correct formula for the compound
1. AsBr5
2. ArBr5
3. AsBr7
4. As5Br
5. none of the above
Element List
Prefixes
next problem
Practice Problem #3
N2O3
Choose the correct name for the compound
1. nitrogen trioxide
2. dinitride trioxide
3. dinitrogen trioxygen
4. dinitrogen trioxide
5. none of the above
Prefixes
next problem
Practice Problem #6
dichlorine monoxide
Choose the correct formula for the compound
1. ClO
2. Cl2O
3. ClO2
4. Cl2O2
5. none of the above
Prefixes
next problem
Practice Problem #8
Tetraphosphorus decaoxide
Choose the correct formula for the compound
1. P4O10
2.
P6O10
3. 4PO10
4. P2O5
5. none of the above
Prefixes
next problem
Practice Problem #11
NO
Choose the correct name for the compound
1. mononitrogen monoxide
2. nitrogen monoxygen
3. mononitrogen oxide
4. nitride monoxide
5. none of the above
This is nitrogen monoxide
next problem
Practice Problem #16
silicon tetrabromide
Choose the correct formula for the compound
1. SBr4
2.
ScBr4
3. SiB4
4. SiBr6
5. none of the above
Element
List Prefixes
The correct
formula
is SiBr4
next problem
Practice Problem #17
S4N4
Choose the correct name for the compound
1 tetrasulfur tetranitride
2. tetrasulfur nitride
3. trisulfur trinitride
4. tetrasulfur tetranitrogen
5. none of the above
Prefixes
next problem
Practice Problem #19
BF3
Choose the correct name for the compound
1. monoboron trifluoride
2. boron trifluorine
3. boron trifluoride
4. bromine trifluoride
5. none of the above
Element List
Practice Problem #20
tetraphosphorus decasulfide
Choose the correct formula for the compound
1. P6S9
2.
P4S9
3. P4Si10
4. Ph4S10
5. none of the above
Element
List is
Prefixes
The correct
formula
P4S10
next problem
dual properties
H
H
B
Al
Si
Ge As
Sb Te
Po At
Element List
1
Actinium
Ac
24 Fluorine
F
47 Lanthanum
La
70 Plutonium
Pu
2 Aluminum
Al
•
Fr
48 Lead
Pb
71 Polonium
Po
4 Argon
Ar
24 Gallium
Ga
49 Lithium
Li
72 Potassium
K
5 Arsenic
As
•
Germanium
Ge
50 Magnesium
Mg
73 Radium
Ra
6 Astatine
At
•
Gold
Au
51 Manganese
Mn
74 Radon
Rn
7 Barium
Ba
•
Helium
He
52 Mercury
9 Beryllium
Be
•
Hygrogen
H
53 Molybddenum Mo
10 Bismuth
Bi
•
Indium
In
54 Neon
Ne
12 Boron
B
•
Iodine
I
55 Nickel
Ni
13 Bromine
Br
•
Iridium
Ir
56 Niobium
Nb
14 Cadmium
Cd
•
Iron
Fe
57 Nitrogen
N
15 Calcium
Ca
•
Krypton
Kr
58 Osmium
Os
17 Carbon
C
59 Oxygen
O
18 Cerium
Ce
60 Palladium
Pd
19 Cesium
Cs
61 Phosphorus
P
20 Chlorine
Cl
62 Platinum
Pt
21 Chromium
Cr
22 Cobalt
Co
23 Copper
Cu
Francium
Hg
return
Prefixes
mono- 1
di2
tri3
tetra- 4
penta- 5
hexa- 6
heptaoctanonadecaundecadodeca-
7
8
9
10
11
12
return