Based on this graph, which group of economies is predicted to have the largest energy
consumption in2025?
A. Mature market economies
B. Emerging economies
C. Transitional economies
D. No way to know
Use the equation to help you calculate the heat of combustion of ethylene, C2H4. The
bond energies are: C H 416 kJ/mol; C C 356 kJ/mol; C C 598 kJ/mol; O O 498
kJ/mol; C O 803 kJ/mol; H O 467 kJ/mol.
The heat of combustion of ethylene is
A. +220 kJ/mol.
B. +1216 kJ/mol.
C. -754 kJ/mol.
D. -1324 kJ/mol.
The energy of motion is called _________ energy.
A. electrical
B. mechanical
C. potential
D. kinetic
The distinctive arrangements of atoms that impart characteristic chemical properties to
the molecules that contain them are called
A. monomers.
B. functional groups.
C. radicals.
D. transition states.
The Prius, a hybrid car produced by Toyota, uses a battery that its makerclaims should
not have to be recharged or replaced during the lifetime of the car. The type of battery
used in the Prius is
A. alkaline.
B. lead acid.
C. nickel-cadmium.
D. nickel-metal hydride.
Lakes surrounded by ______ have very little acid-neutralizing capacity.
I. marble
II. granite
III. limestone
A. I only
B. II only
C. I and III only
D. II and III only
The regions of a polymer where the long polymer molecules are arranged neatly and
tightly in a regular pattern is called the ________ region.
A. crystalline
B. amorphous
C. condensed
D. porous
Which feature or process is unique to nuclear power plants when compared to
conventional coal-burning power plants?
A. formation of steam
B. smoke stacks
C. stream turbines
D. control rods
The distinctive arrangements of atoms that impart characteristic chemical properties to
the molecules that contain them are called
A. monomers.
B. functional groups.
C. radicals.
D. transition states.
The diagram shows a cartoon describing the lock and key model of biological
interactions. What do A and B represent?
A. A represents an enzyme and B represents a drug or hormone.
B. A represents a drug or hormone and B represents an enzyme.
C. A represents a drug or hormone and B represents a cell membrane receptor site.
D. A represents a cell membrane receptor site and B represents a drug or hormone.
Which of these polymers is made by the process of condensation polymerization?
A. polyethylene
B. polystyrene
C. polyvinyl chloride
D. polyethylene terephthalate
Which argument(s) for the increasing use of solar energy is/are valid?
I. Solar cells are becoming cheaper and increasingly more efficient.
II. The cost of generating electricity from fossil fuels is increasing.
III. Limited and uncertain supply and the increasing requirements for pollution control
are raising the cost of using fossil fuels.
A. I only
B. II only
C. I and III only
D. I, II and III
Which solution is acidic?
A. MOH = 0.0065 M
B. MH+ = 1.27 x 109 M
C. MH+ = 5.79 x 1010 M
D. MOH = 1.77 x 1010 M
The two chemical bonds and geometry of water are best represented by:
A.
B.
C.
D.
Every increase of one pH unit indicates
A. an increase in acidity.
B. 10 times more hydrogen ions in solution.
C. 10 times less hydrogen ions in solution.
D. none of the above.
Calculate the mass percent of chlorine in CCl 3 F (Freon-11).
A. 77.5%
B. 25.8%
C. 51.6%
D. 13.8%
Polyvinyl chloride (PVC) is made from the monomer, CH2CHCl. Which would not
be a possible arrangement in PVC?
A.
B.
C.
D.
In an exothermic chemical reaction
A. the mass of the products is greater than the mass of the reactants.
B. the mass of the products is less than the mass of the reactants.
C. heat is released as the reaction proceeds.
D. heat is absorbed as the reaction proceeds.
During the Antarctic spring, ozone is destroyed at a greater rate than it is formed
A. on the surface of atmospheric ice crystals.
B. in a process that is catalytic.
C. in polar stratospheric clouds.
D. All of these choices are correct.
Which is not true of radioactive half-life? Radioactive half-life is
A. the time required for the level of radioactivity in a sample to be cut in half.
B. independent of the amount of radioactive material present.
C. increased by heating the isotope.
D. independent of the physical or chemical form of the isotope.
Although all aspirin tablets contain the same active ingredient, acetylsalicylic acid, not
all aspirin tablets are the same. Which is not a possible reason for this difference?
A. They contain fillers and bonding agents that may vary, depending on the
manufacturer.
B. Some may contain weak bases that act as buffers to reduce the natural acidity of the
aspirin.
C. Some may be coated to keep them intact until they reach the intestine.
D. Some may contain the inactive optical isomer in the preparation.
How many protons, neutrons, and electrons are there in a neutral atom of ?
A. A
B. B
C. C
D. D
Which is the balanced chemical equation for the reaction of nitrogen (N2) with oxygen
(O2) to form NO?
A. 2 NO → N2 + O2
B. N2 + O2 → NO
C. N2 + O2 → 2 NO
D. NO → N2 + O2
The family of compounds known as steroids share a common molecular framework of
17 carbon atoms that are arranged into four rings. Which is a representation of this
common molecular framework?
A.
B.
C.
D.
Which atoms does a hydroxyl functional group contain?
A. hydrogen and carbon
B. carbon and oxygen
C. hydrogen and oxygen
D. hydrogen and nitrogen
Which common process on earth is endothermic?
A. the production of oxygen by photosynthesis
B. ozone decomposing into O2 in the upper atmosphere
C. water freezing to form ice at 0C
D. the reaction of wood with oxygen to form carbon dioxide, water, and ash
In the early 1990s, glass manufacturers developed a green chemistry solution to
reducing NO emissions and energy consumption. This involved
A. reducing the temperature required to melt the glass.
B. using liquid rather than solid starting materials to make the glass.
C. substituting 100% oxygen for air in the large furnaces used to melt and reheat the
glass.
D. melting the starting materials in the absence of air (in a vacuum).
The recommended daily requirement of calcium is 1,000 mg. Tap water in a
Midwestern city contains approximately 150 mg Ca/L. A person living in the city who
drinks two liters of water in one day would receive ________ percent of his/her RDA of
calcium.
A. 3
B. 7.5
C. 15
D. 30
A gasoline’s octane rating is a measure of the
A. gasoline’s resistance to causing knocking in a vehicle’s engine.
B. pollutants produced by burning the gasoline in a vehicle’s engine.
C. energy content of the gasoline.
D. purity of the gasoline.
Which of the following compounds is useful for putting out fires and does not deplete
stratospheric ozone concentrations?
A. Halon-1211
B. CFC-113
C. HFCs
D. Methyl Bromide
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.