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
Identify possible consequences of global warming.
I. A rise in sea level
II. An increase in average relative humidity
III. An increase in forest growth in the Northern Hemisphere
IV. A weakening of ocean currents
A. I and III only
B. I and IV only
C. I, II, and IV only
D. I, II, III, and IV
What is the current expert consensus concerning the role of acid rain on the health of
forests?
A. Acid rain is indisputably responsible for the declining health of many forests.
B. Acid rain is not responsible for any of the decline observed in many forests.
C. Acid rain weakens trees and the surrounding soil, leaving them susceptible to disease
and insects.
D. There is not sufficient evidence that acid rain has caused an appreciable decline in
the health of any forests.
Ozone in our atmosphere is important because it
A. absorbs some UV radiation.
B. helps trees grow.
C. reacts with excess CO2.
D. reflects IR radiation.
The Industrial Revolution is a key point in the Earth’s atmospheric history because
A. prior to that time large deposits of petroleum and coal were not being used as energy
sources.
B. the first atmospheric studies were conducted at that time.
C. spectrometers that could measure molecular response to infrared radiation were
developed at that time.
D. the first aircraft that could be used to collect atmospheric samples were developed at
that time.
A disaccharide is formed when two monosaccharide units react via their OH functional
groups. The linkage in a disaccharide is
A. H to O to H.
B. C to O to C.
C. C to O to H.
D. C to OH to C.
Which is a monosaccharide?
A. cellulose
B. glucose
C. glycogen
D. sucrose
What is the molarity of sodium chloride in a solution containing 0.50 mol of sodium
chloride in 500 mL of water?
A. 0.25 M
B. 0.50 M
C. 1.0 M
D. 5.0 M
Which is true about radioactivity? Radioactivity
A. is used to treat certain cancers.
B. damages white blood cells.
C. damages DNA.
D. All of these choices are true.
Which color in the rainbow has the shortest wavelength?
A. orange
B. red
C. yellow
D. blue
How many carbon atoms are present in this monomer?
A. 2
B. 3
C. 5
D. 8
The Intergovernmental Panel on Climate Change (IPCC) issued a report in 2007 that
attached probabilities to the predictions and statements made. Which
prediction/statement was considered “Very Unlikely”?
A. Human-caused emissions are the main factor causing warming since 1950.
B. Arctic sea ice thickness declined about 40% during late summer to early autumn in
recent decades
C. The observed warming over the past 100 years is due solely to climatic variability.
D. In most of the areas in the Northern Hemisphere, precipitation has increased
HFCs may be used to replace CFCs. Which compound is a HFC?
A. CH2Cl CCl2F
B. CH2FCl
C. CF3CH2F
D. CHClF2
Which increases the efficiency of a photovoltaic or solar cell?
I. Replacing crystalline silicon with its non-crystalline form.
II. Increasing the number of alternating p– and n-type layers of semiconductors.
III. Decreasing the thickness of each alternating p– and n-type layer of semiconductor.
A. I and II only
B. II and III only
C. I and III only
D. I, II, and III
During petroleum refining, catalysts play an extremely important role during the
A. cracking and reforming processes.
B. environmental cleanup of oil wells.
C. extraction of the oil from the earth.
D. physical separation of the various components of the petroleum.
When dissolved in water, hydrogen bromide (HBr) forms hydrobromic acid. Determine
the hydroxide ion concentration in a 4,500 mL solution containing 3.78 g hydrogen
bromide; Kw = 1.00 x 1014.
A. [OH] = 9.63 x 1013 M
B. [OH] = 2.14 x 1013 M
C. [OH] = 4.67 x 102 M
D. [OH] = 0.0104 M
LP gas (liquid propane, C3H8) is the fuel used in gas grills as well as a main source of
heat energy for many rural residences. What is the mass of 5.83 x 1017 molecules of
liquid propane?
A. 2.57 x 1019 g
B. 6.41 x 1018 g
C. 4.27 x 105 g
D. 6.89 x 107 g
What international agreement attempted to reduce greenhouse gas emissions?
A. Kyoto Protocol
B. Montreal Protocol
C. Oslo Accords
D. Nuremburg Treaty
The Industrial Revolution is a key point in the Earth’s atmospheric history because
A. prior to that time large deposits of petroleum and coal were not being used as energy
sources.
B. the first atmospheric studies were conducted at that time.
C. spectrometers that could measure molecular response to infrared radiation were
developed at that time.
D. the first aircraft that could be used to collect atmospheric samples were developed at
that time.
Radon-222
A. is a radioactive gas produced from the decay of radium
B. is naturally occurring
C. is the largest contributor to background radiation
D. all of the above
The radioactive decay series of 238U terminates at which nonradioactive isotope?
A. 210Tl
B. 210Bi
C. 206Pb
D. 144Ba
Which is a common characteristic of both nuclear and conventional electric power
plants?
A. smoke stacks
B. fuel rods
C. control rods
D. stream turbines
Which naturally occurring radioactive particles are the size of a helium nucleus?
A. alpha particles
B. beta particles
C. gamma radiation
D. neutrons
This pie chart gives the composition by weight of municipal solid waste (MSW) before
recycling in 2008.
Which of the following statements is not true?
A. There is about 2.6 times more paper waste than plastic waste.
B. Plastic waste is more than the wood and glass waste combined.
C. Plastic waste and food scraps are almost the same.
D. The plastic and paper waste combined account for more than half the MSW.
Determine the molar mass for fluoxetine (C16H16F3NO), also known as Prozac.
A. 279.3 g/mol
B. 281.3 g/mol
C. 295.3 g/mol
D. 297.1 g/mol
An acidic fog in Pasadena was found to have a pH of 2.50. Which expression represents
this pH measurement?
A. MOH = 3.2 x 1012 M
B. MOH = 3.2 x 109 M
C. MH+ = 9.7 x 103 M
D. MH+ = 2.5 M
Which of these represents a portion of a polyester molecule?
A.
B.
C.
Which statement correctly describes starch and cellulose?
A. Starch is a polymer of glucose, cellulose is not.
B. Starch and cellulose have identical structures but different properties.
C. Starch and cellulose are both made from glucose but have different linkages.
D. Starch and cellulose are both easily digested by the body.
Which of the following in NOT a step in fractional distillation of crude oil?
A. The crude oil is pumped into a large vessel and heated.
B. As the temperature increases, the compounds vaporize.
C. Fractions are mixed with natural gas to enrich the hydrocarbon content.
D. Once in the gas phase, compounds travel up the tall distillation or fractionation
tower. The compounds with smaller molar masses travel higher; the compounds with
larger molar masses travel shorter distances up the column
Which atmospheric component does not contribute to global warming?
A. H2O
B. CO2
C. N2
D. O3