Name: 
 

2002 Chemistry



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

 1. 

Which of the following pieces of glassware can be used to measure the volume of a liquid with the greatest accuracy?
a.
Test tube
c.
Flask
b.
Beaker
d.
Graduated cylinder
 

 2. 


mc002-1.jpg

Which of these elements is found in a family with the above electron configuration?
a.
Al
c.
Si
b.
Sr
d.
Sb
 

 3. 

Which of the following equations is
balanced?
a.
mc003-1.jpg
c.
mc003-3.jpg
b.
mc003-2.jpg
d.
mc003-4.jpg
 

 4. 

Most gases have the property of
becoming increasingly soluble in a
liquid as the temperature of the liquid
decreases. Which graph shows this
relationship?
a.
mc004-1.jpg
c.
mc004-3.jpg
b.
mc004-2.jpg
d.
mc004-4.jpg
 

 5. 

How is 0.00124 expressed in proper scientific notation?
a.
mc005-1.jpg
c.
mc005-3.jpg
b.
mc005-2.jpg
d.
mc005-4.jpg
 

 6. 

How many protons, neutrons, and electrons are in a neutral atom of sodium?
a.
mc006-1.jpg
c.
mc006-3.jpg
b.
mc006-2.jpg
d.
mc006-4.jpg
 

 7. 

The system that shows a decrease in entropy (disorder) is —
a.
air escaping from a tire
c.
salt dissolving in water
b.
snow melting
d.
water freezing
 

 8. 

The pH of a 0.1 molar aqueous solution
of HCl would equal —
a.
-1
c.
11
b.
1
d.
13
 

 9. 

A catalyst is a substance used in chemical reactions to —
a.
provide a higher activation energy
pathway
c.
increase the rate of the reaction
b.
decrease collisions between reactant
molecules
d.
change the equilibrium to favor products
 

 10. 

A student measures the mass of a piece
of copper three times and records the
results in the following table:

mc010-1.jpg


The actual mass of the copper is 28.7 grams. Which of the following is demonstrated in the student’s data?
a.
Accuracy
c.
Precision
b.
Continuity
d.
Reliability
 

 11. 

Which grouping identifies chemical properties?
a.
Malleability, ductility, conductivity
c.
Combustibility, flammability,
reactivity
b.
Luster, hardness, texture
d.
Density, melting point, boiling point
 

 12. 

From left to right across a period, what change is occurring within the atomic nuclei?
a.
A proton is gained.
c.
A neutron is lost.
b.
An electron is gained.
d.
The electron cloud size is decreasing.
 

 13. 


mc013-1.jpg

Which reaction type best describes the reaction above?
a.
Combination
c.
Single replacement
b.
Decomposition
d.
Combustion
 

 14. 

If the heat of fusion is 32.2 kJ/mol, the amount of heat energy required to melt 5.67 grams of FeO is —
a.
2.54 kJ
c.
5.32 kJ
b.
3.26 kJ
d.
18.3 kJ
 

 15. 


mc015-1.jpg

This diagram of a chemical reaction shows that the reaction is —
a.
endothermic
c.
reversible
b.
exothermic
d.
at equilibrium
 

 16. 


mc016-1.jpg

How many atoms are represented in this formula?
a.
5
c.
28
b.
8
d.
29
 

 17. 

Which of the following substances is a
weak electrolyte?
a.
mc017-1.jpg
c.
mc017-3.jpg
b.
mc017-2.jpg
d.
mc017-4.jpg
 

 18. 


mc018-1.jpg

a.
0.077 moles
c.
1.5 moles
b.
1.2 moles
d.
30 moles
 

 19. 

Water has several unique properties such as high boiling point, high surface tension, and low vapor pressure. The type of attraction that best accounts for these unique properties is —
a.
dispersion forces
c.
hydrogen bonding
b.
coordinate covalent bonding
d.
ionic bonding
 

 20. 

Which of these reactions shows simple
chemical decomposition?
a.
mc020-1.jpg
c.
mc020-3.jpg
b.
mc020-2.jpg
d.
mc020-4.jpg
 

 21. 


mc021-1.jpg

a.
the mass and the volume were
multiplied
c.
the graduated cylinder accuracy is only +0.5 mL
b.
the mass of the cylinder was included in the density formula
d.
the mass and volume were inverted in
the density formula
 

 22. 


mc022-1.jpg

A chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. The engineer carries out the Haber reaction under four different conditions. According to these data, which procedure gave the greatest percent yield?
a.
A
c.
C
b.
B
d.
D
 

 23. 

The understanding that the position of an electron in an electron cloud cannot precisely be determined was developed by Werner Heisenberg and is known as the —
a.
planetary model
c.
quantum theory
b.
uncertainty principle
d.
first atomic theory
 

 24. 


mc024-1.jpg

The chart above shows the relationship between the first ionization potential and the increase in atomic number. The letter on the chart that indicates the noble gases or the inert elements is —
a.
A
c.
C
b.
B
d.
D
 

 25. 

The Lewis electron dot system represents electrons in the —
a.
outer energy level
c.
middle level
b.
inner level
d.
core level
 

 26. 


mc026-1.jpg

a.
magnesium iodide
c.
magnesium (II) iodide
b.
magnesium iodite
d.
magnesium diiodide
 

 27. 


mc027-1.jpg

When copper reacts with silver nitrate according to the equation, the number of grams of copper required to produce 432 grams of silver is —
a.
31.5 g
c.
216 g
b.
127 g
d.
252 g
 

 28. 

What is the final concentration if 50.0 mL of a 2.00 M solution are diluted to 500.0 mL?
a.
0.100 M
c.
0.400 M
b.
0.200 M
d.
1.00 M
 

 29. 


mc029-1.jpg

The table above lists the melting and boiling points of some metals. Which metal remains liquid over the widest range of temperature?
a.
Copper
c.
Lead
b.
Iron
d.
Platinum
 

 30. 

Isotopes of an element havedifferent —
a.
atomic numbers
c.
numbers of protons
b.
atomic masses
d.
numbers of outer-shell electrons
 

 31. 


mc031-1.jpg

According to the graph above, what happens at the triple point of water?
a.
Only ice and liquid water exist in
equilibrium.
c.
Water exists only as a gas.
b.
Water exists only as a solid.
d.
Ice, water vapor, and liquid water exist
in equilibrium.
 

 32. 


mc032-1.jpg
a.
504 kPa
c.
2220 kPa
b.
1110 kPa
d.
3320 kPa
 

 33. 

When examining the physical properties of an unknown substance, which of the following characteristics is unsafe to observe?
a.
Color
c.
Form
b.
Weight
d.
Taste
 

 34. 

The density of an unknown metal was determined to be 2.85 g/mL. The actual density was 2.70 g/mL. What is the percent error in this determination?
a.
0.056%
c.
5.6%
b.
0.15%
d.
94.4%
 

 35. 


mc035-1.jpg

a.
mc035-2.jpg
c.
mc035-4.jpg
b.
mc035-3.jpg
d.
mc035-5.jpg
 

 36. 


mc036-1.jpg

mc036-2.jpg
a.
1
c.
4
b.
2
d.
6
 

 37. 


mc037-1.jpg

How many liters of oxygen are required to produce 2 liters of water at STP?
a.
1
c.
3
b.
2
d.
4
 

 38. 


mc038-1.jpg

A student designed this experiment to study the effects of a catalyst on a reaction. Which trial serves as the experimental control?
a.
1
c.
3
b.
2
d.
4
 

 39. 

A student spills a diluted acid solution on his hand. He should —
a.
wipe it off with a paper towel
c.
apply a base solution to neutralize it
b.
let it air dry
d.
rinse it off with running water
 

 40. 

The molar volume of an ideal gas in liters at STP is —
a.
mc040-1.jpg
c.
22.4 L
b.
11.2 L
d.
0.0821 L
 

 41. 


mc041-1.jpg

a.
4.0 atm
c.
2.0 atm
b.
3.0 atm
d.
1.0 atm
 

 42. 

The type of bond found in magnesium chloride is —
a.
covalent
c.
ionic
b.
nonpolar
d.
metallic
 

 43. 

Which of these is about 2 moles?
a.
mc043-1.jpg
c.
mc043-3.jpg
b.
mc043-2.jpg
d.
mc043-4.jpg
 

 44. 

The elements that are characterized by having only five electrons in the p sublevel belong to which family of elements?
a.
Transition
c.
Noble gas
b.
Alkali
d.
Halogens
 

 45. 


mc045-1.jpg

In the above reaction, a cloudiness at completion due to colloidal suspension of sulfur appears. If the reaction is carried out at various temperatures, at which temperature would it proceed at the fastest rate?
a.
mc045-2.jpg
c.
mc045-4.jpg
b.
mc045-3.jpg
d.
mc045-5.jpg
 

 46. 


mc046-1.jpg

A heated liquid placed in a closed container will vaporize until —
a.
the boundary between liquid and vapor
disappears
c.
the number of liquid molecules vaporizing equals the number of vapor
molecules condensing
b.
all the liquid molecules become vapor
molecules
d.
the vapor pressure is greater than the
atmospheric pressure
 

 47. 


mc047-1.jpg

a.
mc047-2.jpg
c.
mc047-4.jpg
b.
mc047-3.jpg
d.
mc047-5.jpg
 

 48. 

To indicate the number of atoms of each element present in a molecular compound, scientists use —
a.
Roman numerals
c.
prefixes
b.
superscripts
d.
subscripts
 

 49. 


mc049-1.jpg
a.
carbon tetrachloride
c.
monocarbon chloride
b.
carbon chloride
d.
tetracarbon monochloride
 

 50. 

The specific heat capacity of a substance is the quantity of heat required to change the temperature of 1 gram of a substance by —
a.
mc050-1.jpg
c.
mc050-3.jpg
b.
mc050-2.jpg
d.
mc050-4.jpg
 



 
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