Quiz: Feb 4, 2005
1. copper (I) sulfide
= Cu2S
Write the names and formulas
for the ionic compounds 2. copper (II) sulfide
formed by these ions:
= CuS
1. Cu1+ and S23. aluminum
phosphide = AlP
2. Cu2+ and S24. aluminum nitrate
3. Al3+ and P3= Al(NO3)3
4. Al3+ and NO315. cobalt (II)
5. Co(OH)2 = cobalt (__)
hydroxide
hydroxide
phosphide = P3sulfide = S2http://www.cnn.com/2003/US/02/10/sprj.bhm.innovators/
George Washington Carver 10 zillion things to do with peanuts
Use roman numerals in the name when
the transition metal has more than one
possible charge:
Fe2+, Fe3+, Mn2+, Mn3+, Mn4+, Mn7+, Cu1+,…
Name the following: CuCl, CuCl2;
MnO2, Hg2I2, Fe2 (CrO4)3, PbSO4,
FeO, Fe2O3, SnBr2, SnBr4, HgO, NiBr3
Naming ionic compounds
containing polyvalent cations.
Cl1Cu?
Cl1-
O2Mn?
O2-
Hg?
I1-
Hg?
I1CrO42-
Fe?
CrO42-
Fe?
CrO42-
•
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CuCl
CuCl2
MnO2
Hg2I2
Fe2 (CrO4)3
PbSO4
FeO
Fe2O3
SnBr2
SnBr4
HgO
NiBr3
•
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copper (I) chloride
copper (II) chloride
manganese (IV) oxide
mercury (I) iodide
iron (III) chromate
lead (II) sulfate
iron (II) oxide
iron (III) oxide
tin (II) bromide
tin (IV) bromide
mercury (II) oxide
nickel (III) bromide
Naming ionic compounds
containing polyvalent cations.
Cl1Ni?
Cl1-
S2Cr?
S2-
Hg?
F1-
Hg?
F1CrO42-
Mn?
CrO42-
Mn?
CrO42-
•
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NiCl
NiCl2
CrS2
Hg2F2
Mn2 (CrO4)3
MnSO4
PbO
PbO2
SnF2
SnS2
Hg3(PO4)2
NiBr2
•
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nickel (I) chloride
nickel (II) chloride
chromium (IV) sulfide
mercury (I) fluoride
manganese (III)
chromate
manganese (II) sulfate
lead (II) oxide
lead (IV) oxide
tin (II) fluoride
tin (IV) sulfide
mercury (II) phosphate
nickel (II) bromide
Writing Formulas
potassium fluoride
K+ and F-
KF
ammonium sulfate
(NH4)2SO4
NH4+ and
SO42-
magnesium iodide
Mg I2
copper (II) sulfite
…. CuSO
3
Mg2+ and
I 1Cu2+ and
SO32-
O 3O
P O
• Aluminum
phosphate
O
1C N
AlPO4
Ag1+
• lead (II) nitrite
Pb(NO2)2
• cobalt (II) selenide
Al3+
O
O
H
Pb2+
O
N
O
1-
CoSe
• silver cyanide
AgCN
• copper II
bicarbonate
Cu(HCO3)2
1-
C
Cu2+
O
O
1-
C
H
O
O
Covalent Compounds
form when two nonmetals and/or
a metalloid and a nonmetal bond
To name covalent compounds
• Covalent compounds are
composed of two or more
nonmetals which share
electrons. (Some metalloids are
covalently bonded as well).
• USE PREFIXES
mono = 1
di = 2
tri = 3
tetra = 4
penta = 5
hexa = 6
hepta = 7
octa = 8
mono = 1
di = 2
tri = 3
tetra = 4
• CO2
• CO
• P2O5
penta = 5
hexa = 6
hepta = 7
octa = 8
• carbon dioxide
• carbon monoxide
• diphosphorous pentoxide
Try SF6
http://misterguch.brinkster.net/covalentcompounds.html
click above for more information about covalent compounds
Naming covalent compounds
sulfur hexafluoride
prefix of less electronegative atom (n ≠ 1),
prefix of second atom– ending ide
Naming covalent compounds
• antimony tribromide
• hexaboron (mono)silicide
• chlorine dioxide
SbBr3
• iodine pentafluoride
I F5
• ….
more examples
B6Si
ClO2
Writing Formulas for covalent
compounds
• P4S5
• O2
• tetraphosphorous
pentasulfide
• oxygen
• SeF6
• selenium hexafluoride
• Si2Br6
• disilicon hexabromide
• SCl4
• …
• sulfur tetra chloride
CH4 methane, is an exception because it is an ORGANIC
compound.
Naming Organic Compounds
meth = 1
eth = 2
prop = 3
but = 4
pent = 5
hex = 6
hept = 7
oct = 8
non = 9
…
• Organic compounds have one or
more carbons, surrounded with
hydrogens.
• They may have double or triple
bonds, and may include oxygen, or
other atoms.
• They are named by counting the
“carbon backbone” and applying a
prefix
• “Functional Groups” provide the
rest of the name.
Naming Organic Compounds
meth = 1
eth = 2
prop = 3
but = 4
pent = 5
hex = 6
hept = 7
oct = 8
non = 9
…
• Butane = 4 carbons
• CH3CH2CH2CH3
• Heptane = 7 carbons
• CH3CH2CH2CH2CH2CH2CH3
• Octane = 8 carbons
• CH3CH2CH2CH2CH2CH2CH2CH3
13 c page 178
6 hydrogen atoms
3 carbon atoms
13 f page 178
6 carbon atoms
12 hydrogen atoms
http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA5/MAIN/1ORGANIC/ORG02/TRAM02/E/NOMOVIE/MISC.HTM
Molecular and Empirical Formulas.
• Molecular: adj. Pertaining to, consisting of,
caused by, or existing between molecules.
• Empirical: adj. 1. Relying upon or derived from
observation or experiment. 2. Guided by
practical experience and not theory, especially
in medicine.
• Formula: n 1. an established form of words for
use in a ceremony or procedure. 3. Chemistry:
a. a symbolic representation of the composition
or of the composition and structure of a
chemical compound. b. The chemical
compound so represented. c. A prescription in
exact proportion: recipe.
Molecular and Empirical
Formulas
• C6H12O6
• H2O2
CH2O
HO
Coefficients: How many sets of a
particular compound/element
• 2 C6H12
Coefficients: How many sets of a
particular compound/element
• 5 C6H12