Nuclear Changes

What makes something radioactive?

• elements with an atomic number above 81
• an unstable nucleus
• contaminated sewage
• It decays over time

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A radioactive nuclide has a ____ stable nucleus than a non-radioactive nucleus of the same element.

• more

• less

• identical

• small

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NGSS.HS-PS1-8

Has a mass of 4 and a charge of +2

• Alpha
• Beta
• Gamma

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Has the symbol

• Alpha
• Beta 
• Gamma

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This is the symbol for a(n)

• alpha particle
• beta particle
• gamma particle

Takes two small nuclei and combines them into a larger nucleus

• fission
• fusion

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The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

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NGSS.HS-PS1-8

How is nuclear fusion different from nuclear fission?

• In fusion, the product is a larger atomic nucleus.
• Fission produces energy but fusion does not.
• Fusion produces energy but fission does not.
• In fission, the product is a larger atomic nucleus.

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NGSS.HS-PS1-8

Which type of nuclear radiation is being emitted here?

• Alpha
• beta
• gamma 
• none

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This is an example of ---

• Radioactive Decay
• Nuclear Fission
• Nuclear Fusion
• Fossil fuel reaction

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NGSS.HS-PS1-8