Nuclear Rxns

Which of the following is an example of nuclear fusion? 

• A plutonium atom is used to start a chain reaction that detonates a nuclear weapon 
• A uranium atom is split apart into lighter elements
•  Two hydrogen atoms are combined to form a helium atom
• Two hydrogen atoms bond with an oxygen atom to form a water molecule 

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How does nuclear fusion compare to nuclear fission?

• Nuclear fusion produces no radioactive waste

• Nuclear fusion produces more radioactive waste

• Nuclear fusion is cheaper and easier to product

• Nuclear fusion requires rare, expensive elements to work

Which of the following best describes the process of nuclear fission? 

• Splitting an atom's nucleus apart 
• Separating an atom's electrons from its nucleus 
• Fusing two atomic nuclei together 
• Splitting an atom's electrons in half 

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The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

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How do nuclear power-plants work?

• Fusion
• Half-life
• Fission
• Fusion or fission

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Which atoms combine together during fusion reaction on the sun?

• Helium and Hydrogen atoms
• Hydrogen atoms
• Hydrogen and Lithium atoms
• Hydrogen and Carbon atoms

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Why do scientists most want to learn more about fusion?

• To win the Nobel prize

• To make energy for people to use

• To destroy the world

• To know more about stars

_________ happens naturally due to an unstable nucleus.

• fission
• fusion
• radioactive decay
• K-capture

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Which of these statements correctly describes how the chain reaction occurs in nuclear fission.

• Uranium releases electrons to create   electricity
• When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split
• When a nuclear fission reaction occurs, the neutrons emitted can strike other nuclei in the sample, and cause them to split
•  Protons and neutrons change to electrons because the nuclei are so big

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What is a benefit of nuclear fission?

• The ability to absorb energy
• The ability to release tremendous amounts of energy
• The ability to produce more energy than nuclear fusion
• There are no beneficial aspects of nuclear fission

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