Chemistry Spring Review
1.
2.
3.
How many valence electrons does zinc
have?
a. 2
b. 4
c. 6
d. 8
A covalent bond is characterized by
a. Electrostatic attraction
between ions
b. Sharing of electrons
c. Losing electrons
d. Gaining electrons
A molecule formed between nitrogen
and oxygen would most likely be
a. Ionic
b. Covalent
c. Metallic
The bond in NaCl is most likely
a. Ionic
b. Covalent
c. Metallic
5.
The bond in chlorine gas is most likely
a. Ionic
b. Covalent
c. Metallic
At sea level, atmospheric pressure is
equal to:
a. 101.3 kPa.
b. 760 mm Hg.
c. standard atmosphere.
d. all of the above
STP refers to:
a. safe temperature and pressure
b. standard temperature and
power
c. standard temperature and
pressure
d. safe temperature and power
9. Absolute zero is:
a. the temperature at which the
motion of particles theoretically
ceases.
b. defined as 0 oC.
c. the triple point for water.
d. all of the above
4.
6.
7.
10. At 80 K and unchanging pressure, the
particles of a gas have:
a. twice the average kinetic energy
of the same particles at 40 K.
b. half the average kinetic energy
of the same particles at 40 K.
c. one-fourth the average kinetic
energy of the same particles at
20 K.
11. As the temperature of the gas in a
balloon decreases
a. The volume increases
b. The pressure increases
c. The average kinetic energy of
the gas particles decreases
d. All of the above are true
12. The volume of a gas is increased from
0.5 L to 4.0 L while the temperature
is held constant. The pressure of the
gas
e. Increases 8 times
f. Increases 4 times
g. Decreases 4 times
h. Decreases 8 times
Judith S. Nuño
1
Chemistry
Spring Review
2003/2004
5. What is the vapor pressure at 50oC?
6. What is the vapor pressure at 80oC?
7. At what temperature is the vapor
pressure 400 mm Hg?
8. At what temperature is the vapor
pressure 750 mm Hg
1. Name the independent variable
2. Name the dependent variable
3. What is the boiling point of this
substance?
4. What is the melting point of this
substance?
Solubility of Copper (II) Sulfate (CuSO4) and Ammonia (NH3)
at Different Temperatures
Water Temperature
(oC)
Mass CuSO4
(grams/100 g H2O)
Mass NH3
(grams/100 g H2O)
0
10
20
30
40
50
60
70
80
90
100
23.1
27.5
32.0
37.8
44.6
53.2
61.8
72.8
83.8
98.9
114.0
89.5
68.4
52.9
41.0
31.6
23.5
16.8
11.1
6.5
3.0
0.0
Data derived from Lange's Handbook of Chemistry, 10th ed.
Name the independent variable?
6. Estimate the mass of NH3 that can be dissolved
in 200 grams of H2O at 85o C
Name the dependent variable?
7. Estimate the mass of CuSO4 that can be
a. Is the CuSO4 curve direct or indirect?
Estimate the mass of CuSO4 that can be
dissolved in 50 grams of H2O at 50o C
o
dissolved in 100 grams of H2O at 20 C
8. Estimate the mass of NH3 that can be dissolved
5. Estimate the mass of NH3 that can be dissolved
in 300 grams of H2O at 20o C
o
in 100 grams of H2O at 70 C
1.
2.
3.
4.
Judith S. Nuño
2
Chemistry
Spring Review
2003/2004
Judith S. Nuño
3
Chemistry
Spring Review
2003/2004
Judith S. Nuño
4
Chemistry
Spring Review
2003/2004