Nuclear Chemistry

Multiple Choice

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.

Multiple Choice

Arrange in order of increasing ability to penetrate matter.

• Beta, gamma, alpha

• Alpha, gamma, beta

• Gamma, beta, alpha

• Alpha, beta, gamma

Multiple Choice

In the symbol ¹⁶₇N what the 7 stand for?

• Mass number

• Atomic number

• Atomic mass

• Number of neutrons

Multiple Choice

Which of the following is the correct isotope for the following ion: Protons = 20; Neutrons = 21; Electrons = 18

Multiple Choice

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

• alpha

• beta

• gamma

• none

Multiple Choice

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

• ¹⁴₅B

• ¹⁴₆C

• ¹⁴₇N

• ⁴₂He

Multiple Choice

The splitting of a nucleus into smaller nuclei is

• fusion

• fission

• decay

• gamma radiation

Multiple Choice

Takes two small nuclei and combines them into a larger nucleus

• Fission

• Fusion

Multiple Choice

This is an example of...

• Fission  reaction

• Fusion reaction

• Decomposition reaction

• Decay

Multiple Choice

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

• Nuclear fusion

• Full-life

• Dead time

• Half-life

Multiple Choice

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