Radioactive Decay of Carbon-14 Quiz
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Questions and Answers

How is the decay of Carbon-14 represented on the graph?

  • As a constant rate of decay
  • As an exponential decay curve (correct)
  • As a stepwise function
  • As a linear function
  • If a sample has 96.875% daughter atoms, what can be inferred about its age?

  • It is approximately 15,000 years old
  • It is less than 10,000 years old
  • It is more than 50,000 years old
  • It is between 25,000 to 30,000 years old (correct)
  • What is the significance of the y-axis in the graph of Carbon-14 decay?

  • It represents the total number of atoms
  • It measures time in years
  • It counts the number of half-lives gone by
  • It shows the percentage of Carbon-14 atoms remaining (correct)
  • Which of the following statements about half-lives of Carbon-14 is true?

    <p>Each half-life decreases the amount of parent atoms by 50%</p> Signup and view all the answers

    What result would you expect if only one half-life had passed, based on initial Carbon-14 atoms?

    <p>50% remaining</p> Signup and view all the answers

    Study Notes

    Radioactive Decay of Carbon-14

    • A rock contains 3.125% parent Carbon-14 atoms and 96.875% daughter atoms.
    • To determine the number of half-lives that have passed, find the percentage of original Carbon-14 remaining on the graph.
    • The graph shows that 3.125% of the original Carbon-14 remains after 2 half-lives.

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    Description

    Test your understanding of the radioactive decay of Carbon-14, particularly in determining the number of half-lives that have passed based on the remaining percentage. This quiz will challenge your knowledge of radioactive isotopes and their decay processes.

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