NUCLEAR CHEMISTRY TEST.
  • 1. What is the product when alpha particles bombarded 231-Pa?
A) Actinium
B) uranium
C) thorium
D) lathanium
E) samarium
  • 2. What is the product when Francium-223 is bombarded by beta particles.
A) lathanium
B) sodium
C) erbium
D) radium
E) neptunium
  • 3. In nuclear notation, what is the number found at the upper left corner of the element?
A) mass number
B) protons
C) electrons
D) neutrons
E) atomic number
  • 4. What is the particle without mass?
A) gamma
B) alpha
C) beta
D) electron capture
E) positron
  • 5. The subatomic particles affected during nuclear reactions are
A) protons only.
B) electrons and neutrons
C) protons and neutrons
D) electrons
E) protons and electrons
  • 6. This type of nuclear reaction refers to the splitting of the atoms.
A) Fission
B) fusion
C) half -life
D) regression
E) degradation
  • 7. How many protons are subtracted from the original atom when bombarded by alpha particles
A) 5 protons
B) 4 protons
C) 6 protons
D) 3 protons
E) 2 protons
  • 8. The decay of uranium by beta particles will produce this kind of element
A) fermium
B) thorium
C) nobelium
D) neptunium
E) the same element
  • 9. Which is not a type of nuclear reaction?
A) positron emission
B) beta decay
C) transfer of electrons
D) alpha decay
E) gamma decay
  • 10. If plutonium will be bombarded by gamma particles, what will happen to plutonium?
A) atomic mass and atomic number remains the same.
B) atomic number will change.
C) Atomic mass will change.
D) Both atomic mass and atomic number will change.
E) atomic number will change, but atomic mass will not change.
  • 11. Which type of radiation has the greatest penetrating power?
A) Gamma ray
B) Neutron emission
C) Alpha particle
D) Electron capture
E) Beta particle
  • 12. 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?
A) 15.8 mg
B) .33 mg
C) 15 mg
D) 33.0 mg
E) 12.5 mg
  • 13. Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?
A) 50 mg
B) 2.5g
C) 80g
D) 0.25g
E) 25g
  • 14. What does it mean when an element is radioactive?
A) Nucleus changes to become stable
B) All options listed.
C) Atom emits radiation
D) Emits radioactive particles
E) Nucleus is unstable due to uneven proton to neutron ratio
  • 15. The time taken for half of an amount of radioactive atoms to decay.
A) Zero life
B) Nuclear fusion
C) Half-life
D) Dead time
E) Full-life
  • 16. After the nucleus of a radioactive element undergoes changes, the element can transform into ...
A) Both options listed.
B) An entirely different element.
C) Neither option listed.
D) different isotope of the same element.
  • 17. The process of nuclear change in an atom of radioactive material is called...
A) nuclear mass
B) isotopes
C) nuclear decay
D) nuclide
E) radon
  • 18. Which of the following is an example of nuclear fusion?
A) A uranium atom is split apart into lighter elements
B) Two hydrogen atoms are combined to form a helium atom
C) A plutonium atom is used to start a chain reaction that detonates a nuclear weapon
D) Two hydrogen atoms bond with an oxygen atom to form a water molecule
  • 19. Which type of nuclear radiation is being emitted here?
A) positron
B) alpha
C) electron capture
D) Beta
E) gamma
  • 20. This is an example of...
A) fusion reaction
B) Fission reaction
C) neutralization
D) Combustion
E) decomposition
  • 21. What percentage of rubidium-87 atoms will be left after four half lives?
A) 6.25%
B) 25.0%
C) 3.125%
D) 12.5%
  • 22. What particle completes this reaction?
A) alpha particle
B) neutron
C) gamma particle
D) Beta particle
  • 23. What is the missing isotope that will balance the following nuclear equation? 94Be + 11H → _____ + 42He
A) 10Ne5
B) 10B5
C) 6Li3
D) 6C3
  • 24. Which type of nuclear radiation is being emitted here?
A) electron capture
B) positron
C) Beta decay
D) alpha
E) gamma
  • 25. If we start off with element 50X24 after an alpha decay we get another element Y that looks like
A) 50Y22
B) 46Y22
C) 54Y26
D) 48Y20
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