1-2 Nuclear Radiation Review IB Chem 1

What happens to the atomic number during alpha decay?

• The atomic number decreases by 4
• The atomic number increases by 1
• The atomic number decreases by 2.
• The atomic number stays the same.

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NGSS.HS-PS1-8

Balance the following equation:
¹⁴₆C --> ⁰_-1e + ________

• ¹⁴₅B
• ¹⁴₆C
• ¹⁴₇N
• ⁴₂He

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NGSS.HS-PS1-8

The half life of Thorium-234 is 24 days. What percentage of the element remains after 96 days. Hint: the starting amount is 100%

• 50

• 25

• 12.5

• 6.25

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NGSS.HS-PS1-8

Complete the nuclear equation and determine the type of decay that is occurring in this reaction. 

• alpha
• beta
• gamma
• none

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NGSS.HS-PS1-8

What does it mean when an element is radioactive?

• atom emits radiation
• nucei unstable due to uneven p to n ratio
• nuclei changes to become stable
• all of the above

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NGSS.HS-PS1-8

The time taken for half of an amount of radioactive atoms to decay.

• Nuclear fusion
• Full-life
• Dead time
• Half-life

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NGSS.HS-PS1-8

The process of nuclear change in an atom of radioactive material is called... 

• nuclear decay
• nuclear mass
• isotopes
• radon

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NGSS.HS-PS1-8

During beta decay, a nucleus .... 

• gives up two protons and two neutrons.
•   maintains the same number of protons, neutrons, and electrons.

•   loses a proton and gains a neutron, and loses an eletron.

• gains a proton and loses a neutron and produces an electron.

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NGSS.HS-PS1-8

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

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NGSS.HS-PS1-8

The three types of nuclear radiation in increasing order of penetrating power are ____.  

•   alpha, beta, gamma 
• X ray, beta, gamma
• alpha, gamma, beta 
• X ray, gamma, beta 

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NGSS.HS-PS1-8