Unit 3 - Nuclear Chemistry

32 Questions

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Unit 3 - Nuclear Chemistry

In the scientific study of chemistry, nuclear chemistry is a subfield which deals with processes and processes of a radioactive nature. In this quiz we’ll look at the topic in the form of several questions to test your knowledge on the subject. How much do you know about it? Let’s find out.


Questions and Answers
  • 1. 
    The nucleus of a radioisotope is unstable, which causes the nucleus to spontaneously
    • A. 

      Decay

    • B. 

      Oxidize

    • C. 

      Release electrons

    • D. 

      Absorb protons

  • 2. 
    The nucleus of a radioisotope is unstable, which causes the nucleus to spontaneously
    • A. 

      Decay

    • B. 

      Oxidize

    • C. 

      Release electrons

    • D. 

      Absorb protons

  • 3. 
    Which group of nuclear emissions is listed in order of increasing penetrating power (from least to greatest)?
    • A. 

      Alpha particle, gamma ray, beta particle

    • B. 

      Alpha particle, beta particle, gamma ray

    • C. 

      Gamma ray, beta particle, alpha particle

    • D. 

      Beta particle, alpha particle, gamma ray

  • 4. 
    Radiation is spontaneously emitted from C-14 nuclei, but radiation is not spontaneously emitted from C-12 nuclei or C-13 nuclei. Which hydrogen nuclei are stable?
    • A. 

      Nuclei of C-12 and C-14, only

    • B. 

      Nuclei of C-12 and C-13, only

    • C. 

      Nuclei of C-13 and C-14, only

    • D. 

      Nuclei of C-12, C-13, and C-14

  • 5. 
    Compared to the mass and the penetrating power of an alpha particle, a beta particle has
    • A. 

      Less mass and greater penetrating power

    • B. 

      Less mass and less penetrating power

    • C. 

      More mass and greater penetrating power

    • D. 

      More mass and less penetrating power

  • 6. 
    Which description matches up correctly with each type of particle?
    • A. 

      Alpha - no mass and no charge; beta - mass of 4 and charge of +2; gamma - charge of -1 and mass of 0

    • B. 

      Alpha - mass of 0 and charge of -1; beta - mass of 4 and charge of +2; gamma - no mass and no charge

    • C. 

      Alpha - mass of 4 and charge of +2; beta - no mass and charge of -1; gamma - no mass and no charge (consists of energy)

    • D. 

      Alpha - no mass and no charge; beta - no mass and no charge; gamma - no mass and no charge

  • 7. 
    In which type of reaction is an atom of one element converted to an atom of a different element?
    • A. 

      Decomposition

    • B. 

      Saponification

    • C. 

      Transmutation

    • D. 

      Neutralization

  • 8. 
    Which balanced equation represents natural transmutation?
    • A. 

      (1)

    • B. 

      (2)

    • C. 

      (3)

    • D. 

      (4)

  • 9. 
    Which two radioisotopes have the same decay mode?
    • A. 

      Co-60 and Fr-220

    • B. 

      K-37 and K-42

    • C. 

      Tc-99 and Ne-19

    • D. 

      Ca-37 and Ne-19

  • 10. 
    Match each of the following mass numbers and charges with the appropriate radioisotopes.                 I. Mass Number of 0, Charge of -1                 II. Mass Number of 0, Charge of +1                 III. Mass Number of 4, Charge of +2
    • A. 

      I - Au-198; II - Fr-220; III - Kr-85; III - Ne-19

    • B. 

      I - Au-198; I - Kr-85; II - Ne-19; III - Fr-220

    • C. 

      I - Au-198; II - Kr-85; II - Ne-19; III - Fr-220

    • D. 

      I - Au-198; II - Kr-85; III - Fr-220; I - Ne-19

  • 11. 
    Atoms of K-37 spontaneously decay when the
    • A. 

      Stable nuclei emit beta particles

    • B. 

      Stable nuclei emit positrons

    • C. 

      Unstable nuclei emit positrons

    • D. 

      Unstable nuclei emit alpha particles

  • 12. 
    Which equation represents the radioactive decay of Ra-226?
    • A. 

      (1)

    • B. 

      (2)

    • C. 

      (3)

    • D. 

      (4)

  • 13. 
    Which equation represents the radioactive decay of P-32?
    • A. 

      (1)

    • B. 

      (2)

    • C. 

      (3)

    • D. 

      (4)

  • 14. 
    Given the nuclear equation:  Which particle is represented by X?
    • A. 

      Alpha

    • B. 

      Beta

    • C. 

      Positron

    • D. 

      Neutron

  • 15. 
    Given the nuclear equation: 
    • A. 

      Beta

    • B. 

      Proton

    • C. 

      Alpha particle

    • D. 

      Positron

  • 16. 
    Which equation represents artificial transmutation?
    • A. 

      (1)

    • B. 

      (2)

    • C. 

      (3)

    • D. 

      (4)

  • 17. 
    Which type of particle is represented by X in the reaction below?
    • A. 

      Beta

    • B. 

      Alpha

    • C. 

      Gamma

    • D. 

      Positron

  • 18. 
    Which type of particle is represented by X in the reaction below?
    • A. 

      Neutron

    • B. 

      Alpha particle

    • C. 

      Beta particle

    • D. 

      Gamma particle

  • 19. 
    What particle is represented by X?
    • A. 

      Ba-150

    • B. 

      Ca-146

    • C. 

      Ba-146

    • D. 

      Ba-145

  • 20. 
    What particle is represented by X below?
    • A. 

      Proton

    • B. 

      Electron

    • C. 

      Positron

    • D. 

      Alpha Particle

  • 21. 
    In which type of reaction do two lighter nuclei combine to form one heavier nucleus?
    • A. 

      Combustion

    • B. 

      Nuclear fission

    • C. 

      Nuclear fusion

    • D. 

      Reduction

  • 22. 
    Which statement best describes what happens in a fission reaction?
    • A. 

      Heavy nuclei split into lighter nuclei

    • B. 

      Light nuclei form into heavier nuclei

    • C. 

      Energy is released and less stable elements are formed

    • D. 

      Energy is absorbed and more stable elements are formed

  • 23. 
    Energy is released during the fission of Pu-239 atoms as a result of the 
    • A. 

      Formation of covalent bonds

    • B. 

      Formation of ionic bonds

    • C. 

      Conversion of matter to energy

    • D. 

      Conversion of energy to matter

  • 24. 
    Which balanced equation represents a fusion reaction?
    • A. 

      (1)

    • B. 

      (2)

    • C. 

      (3)

    • D. 

      (4)

  • 25. 
    Which equation represents a fission reaction?
    • A. 

      (1) only

    • B. 

      (2) only

    • C. 

      (1) and (3)

    • D. 

      (4) only

  • 26. 
    What is the total number of years that must pass before only 12.50 grams of an original 100.0-gram sample of C-14 remains unchanged?
    • A. 

      2865 y

    • B. 

      11460 y

    • C. 

      5730 y

    • D. 

      17190 y

  • 27. 
    Which nuclide has a half-life less than one minute?
    • A. 

      Cesium-137

    • B. 

      Francium-220

    • C. 

      Phosphorus-32

    • D. 

      Strontium-90

  • 28. 
    What is the half-life of a radioisotope if 25.0 grams of an original 100.-gram sample of the isotope remains unchanged after 11.46 days?
    • A. 

      5.73 d

    • B. 

      3.82 d

    • C. 

      11.46 d

    • D. 

      22.92 d

  • 29. 
    Which nuclides are used to date the remains of once-living organisms?
    • A. 

      Co-60 and Cs-137

    • B. 

      U-238 and Pb-206

    • C. 

      I-131 and Xe-131

    • D. 

      C-14 and C-12

  • 30. 
    Which isotope is used to treat cancer?
    • A. 

      Co-60

    • B. 

      C-14

    • C. 

      U-238

    • D. 

      Pb-206

  • 31. 
    Which radioisotope is used for diagnosing thyroid disorders?
    • A. 

      U-238

    • B. 

      Pb-206

    • C. 

      I-131

    • D. 

      Co-60

  • 32. 
    Which isotope is used to date geological formations, like gneiss?
    • A. 

      U-238

    • B. 

      Pb-206

    • C. 

      Co-60

    • D. 

      I-131