Nuclear Science Review

An unstable nucleus will eventually _____.

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NGSS.HS-PS1-8

Elements with atomic number > __ are unstable.

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Unstable nuclei are said to be __________________.

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NGSS.HS-PS1-8

When the nucleus of an atom decays, it emits a radioactive ________.

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What are the 3 radioactive particles that can be emitted?​

A. ​ (a)  

B. ​ (b)  

C. ​ (c)  

• Alpha - 3
• Beta - 2
• Gamma - 1
• proton
• neutron
• electron
• quark

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NGSS.HS-PS1-8

Rank the following particles in order according to their penetrating abilities where 1

is most penetrating and 3 is least penetrating.

• Alpha

• 2

• Gamma

• 3

• Beta

• 1

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Which radioactive particle is represented by the helium symbol?

• Alpha

• Beta

• Gamma

• Theta

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NGSS.HS-PS1-8

Which radioactive particle can penetrate (go through) paper and aluminum?

• Alpha

• Beta

• Gamma

• Theta

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NGSS.HS-PS1-8

What happens to the nucleus of an atom during fission?

• It splits, forming

  smaller nuclei and radioactive particles

• It splits, forming

  larger nuclei and radioactive particles

• It combines, forming

  smaller nuclei and radioactive particles

• It combines, forming

  larger nuclei and radioactive particles

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NGSS.HS-PS1-8

What happens to the nucleus of an atom during fusion?

• It splits, forming

  smaller nuclei and radioactive particles

• It splits, forming

  larger nuclei and radioactive particles

• It combines, forming

  smaller nuclei and radioactive particles

• It combines, forming

  larger nuclei and radioactive particles

Tags

NGSS.HS-PS1-8