Nuclear Chemistry-Honors

Which type of radiation has the greatest penetrating power?

• Alpha
• Beta
• Gamma 
• Microwaves

The technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient how much remains after 18 hours?

• 33.0 mg
• 12.5 mg
• .33 mg
• 15.8 mg

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.

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

• ¹⁴₅B
• ¹⁴₆C
• ¹⁴₇N
• ⁴₂He

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

• alpha
• beta
• gamma
• none

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

Complete the sentence: As time passes the level of radiation produced by a radioactive material...

• Decreases
• Increases
• Remains constant

Classify this process.

• Nuclear fission
• Nuclear fusion
• Alpha decay
• Beta decay

What sort of shield will block gamma rays?

• skin
• paper
• aluminum
• thick lead

What element is the ?

• Ag-115
• Cd-115
• Pd-115
• Not Listed