Name…………………….Student No……………….
CH107 COLLEGE CHEMISTRY SPECIMEN QUIZ 2
(Chapters 4 – 7)
Answer all 12 questions, choosing a single letter for each
Time allowed: 10 minutes. Use the answer grid on page 2
1. Which one of the following metals exhibits the highest reactivity.
a.
b.
c.
d.
Barium
Gold
Francium
Lithium
2. Both Mendeleev and Meyer arranged their periodic table of the elements in order of
increasing
a.
b.
c.
d.
atomic mass
mass number
atomic number
density
3. Which one of the following is an incorrect chemical formula for a lead(IV) compound?
a.
b.
c.
d.
PbO2
PbO
PbCl4
Pb3(PO4)4
4. The following symbol (↓) is seen in a chemical equation next to a product. What does
this symbol mean?
a.
b.
c.
d.
This product is formed in the liquid phase.
This product is formed in the gas phase.
A catalyst is utilized in the chemical process.
This product is formed in the solid phase.
5. In the chemical equation, Ba3N2 + H2O → Ba(OH)2 + NH3, what is the coefficient in
front of H2O when the equation is correctly balanced?
a.
b.
c.
d.
1
2
3
6
6. Which one of the following classes of ions yields predominantly insoluble compounds?
a.
b.
c.
d.
Sulfides
Group IA metal ions
Nitrates
Acetates
7. Having one mole of carbon dioxide means that you have
a.
b.
c.
d.
6.022 x 1023 moles of carbon
6.022 x 1023 grams of CO2
1.204 x1024 atoms of oxygen
1 molecule of CO2
1
8. What is the mass of one mole of elemental chlorine?
a.
b.
c.
d.
35.45 g
70.90 g
17.72 g
not enough information
9. When converting from moles of carbon to moles of oxygen in C 9H11FN2O5, which of the
below ratios should be utilized?
a.
b.
c.
d.
9 mole C/5 mole O
5 mole O/28 mole compound
5 mole O/9 mole C
1 mole O/1 mole C
10. Given the unbalanced chemical equation, Fe(s) + O2(g) → Fe2O3(s), which one of the
following correctly expresses the mole ratio between iron and oxygen?
a.
b.
c.
d.
1 mole Fe/1 mole O2
4 mole Fe/3 mole O2
1 mole Fe/3 mole O2
2 mole Fe/3 mole O2
11. Given the unbalanced equation, Cr(NO3)3(aq) + LiOH(aq) → LiNO3(aq) + Cr(OH)3(s),
how many grams of Cr(NO3)3 are required to produce 0.104 moles of Cr(OH)3?
a.
b.
c.
d.
0.104 g
24.8 g
10.5 g
4.37x10-4 g
12. The reaction between sodium metal and chlorine gas produces 411 kJ of heat energy for
every mole of NaCl produced [2 Na(s) + Cl2(g) → 2 NaCl(s)]. If 8.21 moles of chlorine
gas are consumed, how much heat will be given off?
a.
b.
c.
d.
6750 kJ
0.00999 kJ
100. kJ
822 kJ
1
c
2
a
3
b
4
d
5
d
6
a
7
c
8
b
9
c
10 b
11
b
12 a
2