Name: 
 

2009 Chemistry



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which of these would be best to measure 12.6 mL of liquid ethanol?
a.
25 mL beaker
c.
25 mL Erlenmeyer flask
b.
25 mL volumetric flask
d.
25 mL graduated cylinder
 

 2. 

Potassium (K) has a smaller atomic mass than argon (Ar) even though the
atomic number of potassium is larger than the atomic number of argon.
Which of the following best accounts for this observation?
a.
At STP, potassium is in the solid phase, but argon is a gas.
c.
The most common isotopes of argon have more protons than the most common isotopes of potassium.
b.
It is easier for a potassium atom to lose an electron than it is for an argon atom.
d.
The most common isotopes of potassium have fewer neutrons than the most common isotopes of argon.
 

 3. 

Which of the following is the correct Lewis electron-dot diagram for the
sodium atom?
a.
mc003-1.jpg
c.
mc003-3.jpg
b.
mc003-2.jpg
d.
mc003-4.jpg
 

 4. 


mc004-1.jpg
a.
2
c.
5
b.
4
d.
7
 

 5. 


mc005-1.jpg
What are the coefficients of the correctly balanced equation?
a.
1, 3, 2, 3
c.
1, 2, 2, 2
b.
0, 2, 2, 3
d.
2, 6, 4, 3
 

 6. 

The correct formula for dinitrogen pentoxide is —
a.
mc006-1.jpg
c.
mc006-3.jpg
b.
mc006-2.jpg
d.
mc006-4.jpg
 

 7. 

When ionic compounds are named, the name of a monatomic anion will end in
which of the following suffixes?
a.
-ic
c.
-ate
b.
-ite
d.
-ide
 

 8. 


mc008-1.jpg
a.
Solid
c.
Solute
b.
Liquid
d.
Solvent
 

 9. 


mc009-1.jpg
a.
Phosphorus(I) chloride
c.
Phosphorus pentachlorate
b.
Phosphorus(V) chlorine
d.
Phosphorus pentachloride
 

 10. 


mc010-1.jpg
a.
20
c.
26
b.
23
d.
29
 

 11. 

Covalent bonds mainly occur between —
a.
two nonmetallic elements
c.
one metallic element and one nonmetallic element
b.
two metallic elements
d.
one metalloid and one metallic element
 

 12. 


mc012-1.jpg

What is the volume of the water in this graduated cylinder?
a.
4.39 mL
c.
4.55 mL
b.
4.41 mL
d.
5.61 mL
 

 13. 

If substance X is a liquid, substance Y is a gas, and substance Z is a solid, and
all are at the same temperature and pressure, then the order of increasing
strength of their intermolecular forces would be —
a.
X < Y < Z
c.
Z < Y < X
b.
Y < X < Z
d.
Y < Z < X
 

 14. 

mc014-1.jpg
a.
0.00025 g/mL
c.
2.5 g/mL
b.
0.0125 g/mL
d.
250 g/mL
 

 15. 


mc015-1.jpg
a.
mc015-2.jpg
c.
mc015-4.jpg
b.
mc015-3.jpg
d.
mc015-5.jpg
 

 16. 


mc016-1.jpg
The diagram shows water molecules in an open beaker and water molecules
that have evaporated into the air above the beaker. Which change in this
system will increase the rate of evaporation?

a.
Adding salt to the water
c.
Increasing the pressure of the air above the water
b.
Increasing the temperature of the water
d.
Increasing the humidity of the air above the water
 

 17. 

mc017-1.jpg
a.
It has the same number of neutrons as potassium.
c.
It is one of the heaviest elements in potassium’s group.
b.
It is a transition metal from the same period as potassium.
d.
It is a mix of three unstable isotopes of potassium.
 

 18. 


mc018-1.jpg
mc018-2.jpg
a.
1.28 g
c.
3.85 g
b.
2.55 g
d.
32.5 g
 

 19. 

mc019-1.jpg
a.
8 atoms of aluminum and 3 atoms of oxygen
c.
8 atoms of aluminum and 12 atoms of oxygen
b.
6 atoms of aluminum and 3 atoms of oxygen
d.
6 atoms of aluminum and 7 atoms of oxygen
 

 20. 


mc020-1.jpg

According to the pH scale, which substance is slightly acidic?
a.
Battery acid
c.
Baking soda
b.
Black coffee
d.
Drain cleaner
 

 21. 

Which of these is most likely to form between elements transferring electrons
to form oppositely charged particles?
a.
A metallic bond
c.
A covalent bond
b.
A hydrogen bond
d.
An ionic bond
 

 22. 

Which of the following is a chemical change?
a.
Salt is dissolved in water.
c.
Gasoline combusts in an engine.
b.
Water is boiled on a stove.
d.
Copper metal is stretched into a long wire.
 

 23. 

The table shows the specific heat capacity of four substances.
mc023-1.jpg
mc023-2.jpg
a.
Aluminum
c.
Carbon dioxide
b.
Glass
d.
Water
 

 24. 

mc024-1.jpg
a.
0.439 L
c.
67.2 L
b.
22.8 L
d.
91.9 L
 

 25. 


mc025-1.jpg

Which substance will release the greatest amount of heat when 1.00 mol
is frozen?

a.
Argon
c.
Mercury
b.
Benzene
d.
Water
 

 26. 

A student hypothesizes that bromine (Br) has different chemical properties
from krypton (Kr). The periodic table supports this hypothesis by
indicating that —
a.
bromine is a metal while krypton is a nonmetal
c.
bromine and krypton are members of the same family
b.
one mole of bromine is heavier than one mole of krypton
d.
bromine and krypton have different numbers of valence electrons
 

 27. 

A mixture of gases with a pressure of 800 mm Hg contains 10% oxygen and
90% nitrogen by volume. What is the partial pressure of the oxygen gas in
the mixture?
a.
10 mm Hg
c.
700 mm Hg
b.
80 mm Hg
d.
800 mm Hg
 

 28. 

Which graph best shows the relationship between the volume of a gas and its
temperature as the gas pressure remains constant?
a.
mc028-1.jpg
c.
mc028-3.jpg
b.
mc028-2.jpg
d.
mc028-4.jpg
 

 29. 

One example of an ionic compound is —
a.
mc029-1.jpg
c.
mc029-3.jpg
b.
mc029-2.jpg
d.
mc029-4.jpg
 

 30. 


mc030-1.jpgA bottle of chemical Q spills on the floor. According to the MSDS, what is the
proper response to this accident?

a.
Letting the chemical evaporate by blowing fans on the spill
c.
Wiping up the chemical using paper towels and disposing of them in the trash
b.
Diluting the chemical with water, absorbing the liquid with inert material, and
disposing of it in the trash
d.
Absorbing the chemical with inert material and disposing of it in a chemical
waste container
 

 31. 

Le Chatelier’s principle describes what happens to a system in equilibrium
when a stress occurs. All of the following could shift an equilibrium EXCEPT —

a.
changing the pressure on the system
c.
changing the identity of the catalyst
b.
changing the temperature of the system
d.
changing the concentration of one of the components
 

 32. 


mc032-1.jpg
What type of reaction is shown?
a.
Precipitation
c.
Single replacement
b.
Neutralization
d.
Double replacement
 

 33. 

Hydrogen chloride is a covalent compound. Which is a correct Lewis dot
structure for HCl?
a.
mc033-1.jpg
c.
mc033-3.jpg
b.
mc033-2.jpg
d.
mc033-4.jpg
 

 34. 

Which is the best use for a fume hood?
a.
Storing glassware
c.
Covering volatile compounds
b.
Removing toxic vapors
d.
mc034-1.jpg
 

 35. 

Which of the following equations is balanced?
a.
mc035-1.jpg
c.
mc035-3.jpg
b.
mc035-2.jpg
d.
mc035-4.jpg
 

 36. 

mc036-1.jpg
a.
0.540 J
c.
1350 J
b.
1.50 J
d.
1670 J
 

 37. 


mc037-1.jpg
When an electric current is passed through water, the reaction shown takes
place. If the arrow were pointing in the opposite direction, what type of
reaction would the new reaction represent?

a.
Single-replacement
c.
Synthesis
b.
Double-replacement
d.
Decomposition
 

 38. 


mc038-1.jpg
The picture shows a small section of elements from the periodic table. Which
element has one more proton than element X?

a.
1
c.
3
b.
2
d.
4
 

 39. 


mc039-1.jpg
If 1.0 mole of methane reacts with oxygen to produce carbon dioxide and
water, what mass of water is produced?
a.
16 grams
c.
36 grams
b.
18 grams
d.
44 grams
 

 40. 

An example of a chemical property is —
a.
mass of a substance per unit volume
c.
point where solid becomes liquid
b.
ability to dissolve in solution
d.
tendency to undergo oxidation
 

 41. 

Students want to separate and compare the components of black ink and
green ink. Which technique is the best for the students to use?
a.
Chromatography
c.
Filtration
b.
Decanting
d.
Evaporation
 

 42. 

When 80 g of sodium hydroxide, NaOH, are dissolved in enough water to
make 500 mL of solution, the molarity of the solution is —
a.
1 M
c.
4 M
b.
2 M
d.
8 M
 

 43. 

mc043-1.jpg
a.
Calcium sulfate
c.
Calcium sulfur oxide
b.
Calcium sulfide
d.
Calcium sulfur oxygen
 

 44. 

If the pH of a solution is 4, what is the pOH?
a.
0
c.
7
b.
6
d.
10
 

 45. 


mc045-1.jpg
a.
mc045-2.jpg
c.
mc045-4.jpg
b.
mc045-3.jpg
d.
mc045-5.jpg
 

 46. 


mc046-1.jpg
If the temperature changes from point M to point N, at constant pressure,
compound X undergoes —

a.
one phase change
c.
three phase changes
b.
two phase changes
d.
no change in phase
 

 47. 

Which of these best describes the basis on which new scientific ideas are
accepted or rejected?
a.
Popular support
c.
Compelling evidence
b.
Historical support
d.
Moral and ethical beliefs
 

 48. 

Based on its position in the periodic table, the element sulfur would be
expected to have how many valence electrons?
a.
4
c.
8
b.
6
d.
16
 

 49. 

mc049-1.jpg
a.
mc049-2.jpg
c.
mc049-4.jpg
b.
mc049-3.jpg
d.
mc049-5.jpg
 

 50. 

A student determined that the density of a sample of tin is 8.00 g/mL, when
the actual density of tin is 7.28 g/mL. What was the percent error in the
student’s calculation?
a.
0.72%
c.
9.9%
b.
9.0%
d.
91%
 



 
Check Your Work     Start Over