CHEM
1001/CHM 1020/CHM1025C/CHM 1032C Name
____________________________
Module Four
Exam
Module Four: Part A: Bond Recognition 5 points
Using a periodic chart, classify each element in the pair as a metal or nonmetal, then predict the bond type that should exist between the two elements. (Assume all metal-nonmetal combinations have an electronegativity difference greater than 1.7.)
1. |
K-Br |
________________ |
4. |
C-H |
________________ |
2. |
P-Cl |
________________ |
5. |
Cu-Zn |
________________ |
3. |
Cu-S |
________________ |
|
|
|
Module Four: Part C: Binary Molecular Compounds 5 points
Using a periodic chart write the names or formulas of the following compounds depending on whether the formula or the name is given.
1. |
CO2 |
________________ |
2. |
SO2 |
________________ |
3. |
N2O3 |
________________ |
4. Phosphorus Pentachloride ________________
5. Nitrogen Trihydride (Ammonia) ________________
Module Four: Part D: Binary Ionic Compounds 5 points
Using a periodic chart, write the names or the balanced formulas for the following compounds depending on whether the formula or the name is given:
1. Lithium Sulfide ________________
2. Iron II Chloride ________________
3. Tin IV Fluoride ________________
4. CaF2 ________________
5. CO3P2 ________________
Module Four: Part B: Dot Structures of Modules 30 points
Using a periodic chart draw the electron dot structures of the following molecules. (Choose one for each question or the one circled on the paper.) You may use your electron dot kits, but the kit may not include the polyatomic ion names/formula cutouts.
1. NH3 CH4 H2O2 H2O 2. H2SO4 H3PO4 HClO3 HClO4
3. HNO3 H2CO3 HNO2 4.
CO2 HCN CO
5. HC2H3O2 H2C2O4
HCHO2 6. C2H4 C2H2 C3H8 C2H6
carbon to carbon by single
covalent bond bond
carbons to carbon
7. CH2O
CH3COCH3 8. CH3OCH3 CHONH2
carbon
to carbons by single covalent bonds oxygen separates the
carbons O & N both bond to C
Bonus: CH2NH2COOH CH3COOCH2CH3
(work on back) carbon to carbons by single
covalent bonds (CH2 also hooks to oxygen in#2)
Module Four: Part E:
Polyatomic Ions 5
points
Using a periodic
chart write the names or formulas of the polyatomic ions depending on whether
the formula or the name is given. (The
formula must include the ion’s appropriate charge.)
1.
SiO3 2-
________________
2.
SO4 2-
________________
3.
PO4 3-
________________
4.
ClO4 1-
________________
5.
NO2 1-
________________
6.
Hydroxide ________________
7.
Ammonium ________________
8. Hypochlorite ________________
9.
Nitrate
________________
10.
Sulfite
________________
BONUS: If you miss one of the above
questions, one of the ions below will replace
any incorrect answer, provided the bonus answer is correct.
Bonus #1
Acetate
________________
Bonus #2
Cyanide
________________
Bonus #3
Thiocyanate ________________
Module Four: Part F:
Ternary Ionic Compounds 5
points
Using a periodic
chart write the names or formulas of the following compounds depending on
whether the formula or name is given:
1.
K2SiO3
________________
2.
Na3PO4 ________________
3.
(NH4)2SO3 ________________
4. Mg(OH)3
________________
5. Fe(IO3)3 ________________
6.
Ammonium Hydroxide
________________
7.
Aluminum Hydroxide
________________
8.
Sodium Perchlorate ________________
9.
Calcium Nitrite
________________
10.
Copper II Sulfate
________________
Module
Four: Part G: Binary/Ternary Acid
points
Using a periodic
chart write the names or balanced chemical formulas of the following compounds,
depending on whether the formula or the name is given:
1. HCl
________________
2. HClO ________________
3.
HClO2 ________________
4.
HClO3
________________
5.
HClO4
________________
6.
Nitric Acid
________________
7.
Carbonic Acid
________________
8.
Sulfuric Acid
________________
9.
Phosphoric Acid ________________
10.
Nitrous Acid
________________
Module
Four: Part H: Inorganic Compounds 10
points
Using a periodic
chart write the names or balanced chemical formulas of the following compounds,
depending on whether the formula or the name is given:
1.
CO2
________________
2.
H2O2 ________________
3.
HBrO3 ________________
4.
Fe2O3 ________________
5.
NiSO4 ________________
6.
Calcium Phosphate
________________
7.
Sodium Hydroxide
________________
8.
Sulfurous Acid
________________
9.
Aluminum Carbonate
________________
10.
Ammonium Chloride
________________
Module
Four: Part M: Multiple Choice 10 points
1. According to the general trends in the
periodic table, which of the following elements is the most electronegative?
(a) O |
(b) F |
(c) P |
(d) S |
(e) Cl |
2. Draw the electron dot formula for ethylene,
C2H4, and state the type of bonds in one molecule.
(a) 6 single bonds |
(b) 5 single bonds |
(c) 4 single bonds and 1
double bond |
(d) 4 single bonds and 2
double bonds |
(e) 4 single bonds and 1
triple bond |
3. Magnesium metal and oxygen gas react to form
the ionic compound magnesium
oxide. Which of the following
statements is true?
(a) Valence electrons
are transferred from oxygen to magnesium atoms.
(b) The magnesium
atom and the magnesium ion have the same number of valence electrons.
(c) Magnesium and
magnesium oxide have similar properties.
(d) The smallest
representative particle is a molecule.
(e) none of the above
4. Which noble gas is isoelectronic
with a lithium ion?
(a) helium |
(b) neon |
(c) argon |
(d) krypton |
(e) xenon |
5. Which of the following ions has the electron
configuration 1s2 2s2 2p6
(a) F- |
(b) O2- |
(c) N3- |
(d) all of the above |
(e) none of the above |
6. What type of chemical bond results from
transferring valence electrons from a metal to a nonmetal?
(a) covalent bond |
(b) ionic bond |
(c) metallic bond |
(d) coordinate covalent bond |
(e) none of the above |
7. The mercury (II) ion, Hg2+, is
classified as which of the following?
(a) monoatomic cation |
(b) monoatomic anion |
(c) polyatomic cation |
(d) polyatomic anion |
(e) none of the above |
8. Aqueous H2S is classified as
which of the following?
(a) binary ionic |
(b) ternary ionic |
(c) binary molecular |
(d) binary acid |
(e) ternary oxyacid |
9. What is the formula for the nitride ion?
(a) N3- |
(b) N2- |
(c) N– |
(d) NO2- |
(e) NO2- |
10. What is the formula for the hydrogen
carbonate ion?
(a) C2H3O2- |
(b) C2H3O22- |
(c) HCO3- |
(d) HCO32- |
(e) none of the above |