5.4 Radioactivity and Nuclear Reactions

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

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NGSS.HS-PS1-8

The product of nuclear fission includes

• neutrons and electrons
• several nuclei and neutrons
• several nuclei and electrons
• several nuclei and protons

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NGSS.HS-PS1-8

Which of the following is true about nuclear fission?

• The mass of the product is greater than the mass of the original nucleus
• The mass of the product is less than that of the original nucleus
• The mass of the product is the same as the mass of the original nucleus
• The mass of the product is 100 times greater than the original nucleus

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NGSS.HS-PS1-8

What is a chain reaction?

• When electrons travel are emitted causing electricity
• When a nuclear fission reaction occurs, the protons 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
• When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split

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NGSS.HS-PS1-8

Two nuclei with low masses are combined to form one nucleus of larger mass is called what?

• Nuclear fission
• Nuclear fussion
• Nuclear half-life
• Half-life

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NGSS.HS-PS1-8

Which of the following is true about nuclear fusion?

• It is easy to implement.
• It produces less energy than nuclear fission.
• It produces more energy than nuclear fission.
• It has the ability to occur easily in everyday life.

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NGSS.HS-PS1-8

How do nuclear power-plants work?

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

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NGSS.HS-PS1-8

What is the half-life of a radioactive isotope?

• The time taken for the daughter nuclei to increase

• The time taken for the nucleus to decay

• The time taken for half the parent nuclei to decay

After the third half-life, how much of the sample is left?

• 1/2
• 1/3
• 1/16
• 1/8

Tags

NGSS.HS-PS1-8

After 22,800 years, approximately what percentage of the original carbon-14 remains?

• 15%

• 12.5%

• 6.25%

• 3.125%