Nuclear Chemistry

When the isotope ⁵⁰₂₄X releases an alpha particle we get another element Y that looks like

• ⁵⁰₂₂Y

• ⁴⁶₂₂Y

• ⁴⁸₂₀Y

• ⁵⁴₂₆Y

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NGSS.HS-PS1-8

When the isotope ⁵⁰₂₄X releases a beta particle we get another element, Y, that looks like

• ⁵⁰₂₃Y

• ⁴⁶₂₂Y

• ⁵⁰₂₅Y

• ⁵⁰₂₄Y

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NGSS.HS-PS1-8

What is meant by the statement that ³²₁₅P has a half life of 14 days

• It takes 7 days to go down to 50% radioactivity each time

• It takes 14 days to lose 50% of its current isotope

• After 14 days it starts to become less radioactive

• It takes 14 days to go up by 50% radioactivity each time

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NGSS.HS-PS1-8

In order of most to least penetrating radiation we have

• Alpha , Beta, Gamma

• Beta , Gamma , Alpha

• Gamma, Beta, Alpha

• Gamma, Alpha, Beta

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NGSS.HS-PS1-8

The half life of Thorium-234 is 24 days. What fraction of the element remains after 96 days

• 1/2
• 1/4
• 1/8
• 1/16

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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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NGSS.HS-PS1-8

Has the symbol

• Alpha
• Beta
• Gamma

Has the symbol

• Alpha
• Beta
• Gamma

Has the symbol

• Alpha
• Beta 
• Gamma

Which type of radioactive decay gives off energy only (no particles)?

• alpha

• beta

• gamma

Tags

NGSS.HS-PS1-8