Ch01
Student: ___________________________________________________________________________
1. Of five major gaseous components of air, which is the only one to vary significantly in concentration
from place to place and from day to day?
A. water vapor
B. carbon dioxide
C. nitrogen
D. argon
2. Which two gases make up more than 95% of an inhaled breath?
A. NO2 and N2
B. CO2 and O2
C. O2 and N2
D. N2 and Ar
3. What is the primary component of an exhaled breath?
A. N2
B. O2
C. CO2
D. H2O
4. Which component of the air makes up approximately 100 times more of an exhaled breath than of an
inhaled breath?
A. Ar
B. O2
C. O3
D. CO2
5. The ________ concentration in the air over the desert differs dramatically from that in the air in the
tropical rainforest.
A. N2
B. O2
C. CO2
D. H2O
6. Which component of the air is an element?
A. H2O
B. NO2
C. O2
D. CO2
7. Air is a(n)
A. element.
B. compound.
C. mixture.
D. pure substance.
8. Which substance is not considered to be an air pollutant?
A. N2
B. SO2
C. NO2
D. O3
,9. Ozone is considered an air pollutant in the ________ but is a valuable protective layer in the __________.
A. troposphere; stratosphere
B. stratosphere; mesosphere
C. stratosphere; troposphere
D. mesosphere; stratosphere
10. A particular sample of air is 2.5% water vapor. Express the concentration of water vapor in parts per
million (ppm).
A. 0.0000025 ppm
B. 0.025 ppm
C. 250 ppm
D. 25000 ppm
11. The EPA limit for CO is 9 ppm. Express this number as a percentage.
A. 90%
B. 9%
C. 0.09%
D. 0.0009%
12. The quantity 0.0000064 g expressed in scientific notation is:
A. 6.4 × 106 g
B. 6.4 × 10¯6 g
C. 6.4 × 107 g
D. 6.4 × 10¯7 g
13. The quantity 8.7 × 105 g expressed in standard decimal notation is:
A. 0.000087 g
B. 870.000 g
C. 0.0000087 g
D. 870,000 g
14. Which pollutant is present in air as particulate matter?
A. soot
B. ozone
C. sulfur dioxide
D. carbon monoxide
15. What two factors are considered when determining the risk assessment for air pollutants?
A. exposure and ppm
B. percentage and ppm
C. toxicity and percentage
D. toxicity and exposure
16. When assessing the risk of an air pollutant, which does not play a role in considering someone's exposure
to the pollutant?
A. a person's lung capacity
B. a person's breathing rate
C. the toxicity of the pollutant
D. the concentration in air of the pollutant
17. The burning of coal produces sulfur dioxide, SO2, a pollutant that slowly reacts in air to form SO3. Sulfur
trioxide dissolves into airborne water droplets to form a very corrosive solution of sulfuric acid. Which is
a product of burning coal that hastens the transformation of sulfur dioxide into sulfur trioxide?
A. carbon dioxide
B. carbon monoxide
C. nitrogen dioxide
D. particles of ash
,18. All of these pollutants can be detected by their odors except:
A. CO
B. O3
C. SOx
D. NOx
19. Which pollutant are you more likely to encounter in dangerous concentrations indoors rather than
outdoors?
A. nitrogen dioxide
B. carbon monoxide
C. ozone
D. sulfur dioxide
20. In general, which airborne material is not likely to be affected by the filters or indoor air handling
equipment?
A. particulates
B. pollen
C. soot
D. carbon monoxide
21. Which color, as used in the Air Quality Index, warns that the level of a pollutant is hazardous, the most
dangerous level?
A. orange
B. green
C. yellow
D. maroon
22. A substance that can be broken down into two or more simpler substances by chemical methods is called
a(n)
A. compound.
B. mixture.
C. element.
D. isotope.
23. On a Periodic Table, the columns of elements with similar properties are
A. periods.
B. groups.
C. rows.
D. metals.
24. The most numerous of the elements are the
A. metals.
B. non metals.
C. metalloids.
D. noble gases.
25. Which is not a mixture?
A. a jar filled with rocks and sand
B. sea water
C. a glass of Kool-Aid
D. sodium chloride
26. Which is not a pure substance?
A. helium
B. copper wire
C. air
D. sucrose
, 27.
Which squares contain mixtures?
A. II and III only
B. III and IV only
C. I, III, and IV only
D. I and IV only
28. Which square(s) contain(s) only an element?
A. I only
B. II only
C. I and II only
D. III and IV only
29. Which symbols represent only elements that are metals?
A. X and Z
B. X and Q
C. P and L
D. X, R, P, and Q
30. Which symbol(s) represent(s) elements in the noble gas family?
A. X and Z
B. P and L
C. Q
D. Y
31. Which differentiates a compound from a mixture of two or more elements?
A. The elements in a compound may be present in varying proportions.
B. A compound does not exhibit the individual properties of the elements of which it is composed.
C. A compound is made up of only one element.
D. A compound cannot be made up of more than two elements.
Student: ___________________________________________________________________________
1. Of five major gaseous components of air, which is the only one to vary significantly in concentration
from place to place and from day to day?
A. water vapor
B. carbon dioxide
C. nitrogen
D. argon
2. Which two gases make up more than 95% of an inhaled breath?
A. NO2 and N2
B. CO2 and O2
C. O2 and N2
D. N2 and Ar
3. What is the primary component of an exhaled breath?
A. N2
B. O2
C. CO2
D. H2O
4. Which component of the air makes up approximately 100 times more of an exhaled breath than of an
inhaled breath?
A. Ar
B. O2
C. O3
D. CO2
5. The ________ concentration in the air over the desert differs dramatically from that in the air in the
tropical rainforest.
A. N2
B. O2
C. CO2
D. H2O
6. Which component of the air is an element?
A. H2O
B. NO2
C. O2
D. CO2
7. Air is a(n)
A. element.
B. compound.
C. mixture.
D. pure substance.
8. Which substance is not considered to be an air pollutant?
A. N2
B. SO2
C. NO2
D. O3
,9. Ozone is considered an air pollutant in the ________ but is a valuable protective layer in the __________.
A. troposphere; stratosphere
B. stratosphere; mesosphere
C. stratosphere; troposphere
D. mesosphere; stratosphere
10. A particular sample of air is 2.5% water vapor. Express the concentration of water vapor in parts per
million (ppm).
A. 0.0000025 ppm
B. 0.025 ppm
C. 250 ppm
D. 25000 ppm
11. The EPA limit for CO is 9 ppm. Express this number as a percentage.
A. 90%
B. 9%
C. 0.09%
D. 0.0009%
12. The quantity 0.0000064 g expressed in scientific notation is:
A. 6.4 × 106 g
B. 6.4 × 10¯6 g
C. 6.4 × 107 g
D. 6.4 × 10¯7 g
13. The quantity 8.7 × 105 g expressed in standard decimal notation is:
A. 0.000087 g
B. 870.000 g
C. 0.0000087 g
D. 870,000 g
14. Which pollutant is present in air as particulate matter?
A. soot
B. ozone
C. sulfur dioxide
D. carbon monoxide
15. What two factors are considered when determining the risk assessment for air pollutants?
A. exposure and ppm
B. percentage and ppm
C. toxicity and percentage
D. toxicity and exposure
16. When assessing the risk of an air pollutant, which does not play a role in considering someone's exposure
to the pollutant?
A. a person's lung capacity
B. a person's breathing rate
C. the toxicity of the pollutant
D. the concentration in air of the pollutant
17. The burning of coal produces sulfur dioxide, SO2, a pollutant that slowly reacts in air to form SO3. Sulfur
trioxide dissolves into airborne water droplets to form a very corrosive solution of sulfuric acid. Which is
a product of burning coal that hastens the transformation of sulfur dioxide into sulfur trioxide?
A. carbon dioxide
B. carbon monoxide
C. nitrogen dioxide
D. particles of ash
,18. All of these pollutants can be detected by their odors except:
A. CO
B. O3
C. SOx
D. NOx
19. Which pollutant are you more likely to encounter in dangerous concentrations indoors rather than
outdoors?
A. nitrogen dioxide
B. carbon monoxide
C. ozone
D. sulfur dioxide
20. In general, which airborne material is not likely to be affected by the filters or indoor air handling
equipment?
A. particulates
B. pollen
C. soot
D. carbon monoxide
21. Which color, as used in the Air Quality Index, warns that the level of a pollutant is hazardous, the most
dangerous level?
A. orange
B. green
C. yellow
D. maroon
22. A substance that can be broken down into two or more simpler substances by chemical methods is called
a(n)
A. compound.
B. mixture.
C. element.
D. isotope.
23. On a Periodic Table, the columns of elements with similar properties are
A. periods.
B. groups.
C. rows.
D. metals.
24. The most numerous of the elements are the
A. metals.
B. non metals.
C. metalloids.
D. noble gases.
25. Which is not a mixture?
A. a jar filled with rocks and sand
B. sea water
C. a glass of Kool-Aid
D. sodium chloride
26. Which is not a pure substance?
A. helium
B. copper wire
C. air
D. sucrose
, 27.
Which squares contain mixtures?
A. II and III only
B. III and IV only
C. I, III, and IV only
D. I and IV only
28. Which square(s) contain(s) only an element?
A. I only
B. II only
C. I and II only
D. III and IV only
29. Which symbols represent only elements that are metals?
A. X and Z
B. X and Q
C. P and L
D. X, R, P, and Q
30. Which symbol(s) represent(s) elements in the noble gas family?
A. X and Z
B. P and L
C. Q
D. Y
31. Which differentiates a compound from a mixture of two or more elements?
A. The elements in a compound may be present in varying proportions.
B. A compound does not exhibit the individual properties of the elements of which it is composed.
C. A compound is made up of only one element.
D. A compound cannot be made up of more than two elements.
