Nuclear Fission
Chemistry ⇒ Nuclear Chemistry
Nuclear Fission starts at 11 and continues till grade 12.
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A nuclear reactor is operating at a steady state. What does this imply about the neutron population?
A sample of Uranium-235 absorbs a neutron and splits into Barium-141, Krypton-92, and three neutrons. Write the balanced nuclear equation for this reaction.
Describe the difference between spontaneous and induced fission.
Describe the main safety feature of a nuclear reactor that prevents the release of radioactive materials.
Describe the role of coolant in a nuclear fission reactor.
Describe what is meant by a chain reaction in nuclear fission.
Explain the difference between nuclear fission and nuclear fusion.
Explain why a nuclear chain reaction can be dangerous if not controlled.
Which of the following best describes a 'critical' state in a nuclear reactor? (1) The chain reaction is self-sustaining (2) The reaction is increasing exponentially (3) The reaction has stopped (4) The reactor is shut down
Which of the following is a direct consequence of uncontrolled nuclear fission? (1) Radioactive decay (2) Nuclear explosion (3) Nuclear fusion (4) Beta emission
Which of the following is a fissionable isotope? (1) Uranium-238 (2) Plutonium-239 (3) Thorium-232 (4) Carbon-12
Which of the following is a major advantage of nuclear fission over fossil fuels for electricity generation? (1) No radioactive waste (2) Lower greenhouse gas emissions (3) Unlimited fuel supply (4) No safety concerns
Fill in the blank: The first artificial nuclear fission was achieved by __________ and Strassmann in 1938.
Fill in the blank: The fission of Uranium-235 by a thermal neutron typically produces two fission fragments, __________, and energy.
Fill in the blank: The minimum mass of fissile material required to sustain a chain reaction is called __________ mass.
Fill in the blank: The process in which a neutron initiates the splitting of a heavy nucleus is called __________.
True or False: Fast neutrons are more effective than slow neutrons in causing fission of Uranium-235.
True or False: Nuclear fission always produces exactly two daughter nuclei.
True or False: The energy released in nuclear fission is primarily due to the conversion of mass into energy as described by Einstein’s equation E=mc².
True or False: The fission of Uranium-235 can be initiated by both thermal and fast neutrons, but is more probable with thermal neutrons.
