Quiz 2/9/05
Br1Br1Fe?
Br1-
1. FeBr3
2. CaO
3. NiCrO4
4. CS2
5. CBr4
Ni?
CrO42-
6. Ca(OH)2
1. iron (III) bromide
2. calcium oxide
3. nickel (II) chromate
4.
5.
6.
7.
7. P2O5
14 points each
carbon disulfide
carbon tetrabromide
calcium hydroxide
diphosphorous
pentoxide
Electronegativity: the relative tendency of an
atom to attract electrons to itself when
participating in a chemical bond.
• Most bonds have some ionic character.
• If more than 50% of the time one ion has
possession of the electron, the compound is
considered ionic.
• This means that if the difference in
electronegativity is greater than 1.67, the
compound is considered ionic.
• The more ionic a bond, the more easily a
solution of the compound will conduct
electricity.
• Electricity is defined as the flow of electrons.
• Do pre-lab for lab 21
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Ca(OH)2
••
Fe2O3
••
MnO2
iron I(I) oxide ••
••
CO
carbon dioxide
••
dinitrogen
•
trioxide
••
Li2S
•
•
AsCl3
•
Ca3N2
•
potassium oxide •
lead (II) oxide ••
•
GeCl4
••
SiC
••
OF2
•
calcium
hydroxide
iron
(III)
BaBr
oxide 2
SF6
manganese
(IV) oxide
BrF3
FeO
carbon
GaF3
monoxide
CO
IF25
N2O3
Pb(NO3)2
lithium
sulfide
Cr(OH)
arsenic 3
trichloride
FeSO4
calcium
nitride
ZnSO4
K2O
MnSO4
PbO
germanium
Na CrO4
tetra2chloride
silicon
PbCrO4
monocarbide
oxygen
difluoride
• CaC2
• iron (III) sulfide
• magnesium
chloride
• zinc oxide
• Sr(CN)2
• SO3
• iron (II) sulfide
• iron (II) sulfite
• iron (II) sulfate
• silver oxide
• PCl3
• NH4Cl
• (NH4)2SO4
• • BaBr
2
barium
bromide
• • SF
6
sulfur
hexafluoride
• • BrF
3
bromine
tri fluoride
• GaF3
• gallium trifluoride
• • IFiodide
5
pentafluoride
• • Pb(NO
3)2 nitrate
lead (II)
• • Cr(OH)
3
chromium
(III) hydroxide
• • FeSO
iron 4(II) sulfate
• • ZnSO
zinc 4sulfate
• • MnSO
4
manganese
(II) sulfate
• Na2CrO4
• sodium chromate
• • PbCrO
4 chromate
lead (II)
• CaC2
• iron (III) sulfide
• magnesium
chloride
• zinc oxide
• Sr(CN)2
• SO3
• iron (II) sulfide
• iron (II) sulfite
• iron (II) sulfate
• silver oxide
• PCl3
• NH4Cl
• (NH4)2SO4
• CaC2
• iron (III) sulfide
• magnesium
chloride
• zinc oxide
• Sr(CN)2
• SO3
• iron (II) sulfide
• iron (II) sulfite
• iron (II) sulfate
• silver oxide
• PCl3
• NH4Cl
• (NH4)2SO4
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calcium carbide
Fe2S3
MgCl2
ZnO
strontium cyanide
sulfur trioxide
FeS
FeSO3
FeSO4
Ag2O
phosphorous trichloride
ammonium sulfate
Lab 21: Conductivity of substances
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
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C6H12O6
H2O2
Hg2I2
C6H14
CH2O
HO
HgI
C2H7
Coefficients: How many sets of a
particular compound/element
• 2 C6H12
Coefficients: How many sets of a
particular compound/element
• 5 C6H12