52_100_E2_key_F07

52_100_E2_key_F07 - Chemistry for the Citizen Exam 2A...

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52.100 Exam 2A Page 1 Chemistry for the Citizen Exam 2A Thursday October 11, 2007 Name: _______________________________________ Tear off this page and turn it in with your scantron sheet. Also write the form of your exam on the bottom of your scantron sheet.
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52.100 Exam 2A Page 2 1. The German government used hydrogen to fill the Hindenburg because: a. Hydrogen was cheaper than any other gas available b. The United States controlled most of the helium production in the world and would not give any to the Germans c. Hydrogen is the only gas that is less dense than air d. They wanted to prove that hydrogen was safe as a zeppelin gas source 2. Three objects A , B , and C are placed in a container of water. A sinks to the bottom, B floats on top of the water, and C is suspended about halfway between the bottom and top. What can you say about the densities of each object? a. A is the most dense, B is the second most dense, and C is the least dense b. C is the most dense, B is the second most dense, and A is the least dense c. A is the most dense, C is the second most dense, and B is the least dense d. B is the most dense, A is the second most dense, and C is the least dense e. B is the most dense, C is the second most dense, and A is the least dense 3. Which of the following issues is not a major concern of the local community or the company operating the nuclear reactor when a new reactor is proposed to be built? a. New traffic patterns around the plant b. Nuclear explosion c. Non-nuclear accident d. Source of fuel e. Disposal of waste 4. A nuclear reactor that produces more fissionable fuel than it consumes is called a: a. Fission reactor b. Fusion reactor c. Breeder reactor d. Recycling reactor 5. Which of the following is not a major issue with a Breeder reactor a. The fuel Pu-239 is a weapon grade material b. Pu-239 is a major carcinogen c. The high initial cost of building the reactor d. Material in which to build the reactor 6. The amount of a radioisotope that remains after two half-lives have passes is: a. 98 % b. 75 % c. 50 %
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52.100 Exam 2A Page 3 d. 25 % e. 12.5% 7. The half-life of a radioisotope can be sped up by: a. Heating the radioisotope b. It cannot be sped up c. Placing the radioisotope under pressure d. Placing the radioisotope in a strong magnetic field 8.
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52_100_E2_key_F07 - Chemistry for the Citizen Exam 2A...

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