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Atomic Theory

9 Questions
Atom Quizzes & Trivia

Atomic theory portion of the Virginia SOL chemistry exam.

Questions and Answers
  • 1. 
    What scientist was the first to conclude through experimentation that atoms have positive charges in their nuclei?
    • A. 

      Bohr

    • B. 

      Balton

    • C. 

      Mosley

    • D. 

      Rutherford

  • 2. 
    Atoms of the same element must -
    • A. 

      Contain the same number of neutrons

    • B. 

      Have the same mass number

    • C. 

      Contain the same number of protons

    • D. 

      Have equal numbers of protons and neutrons

  • 3. 
    Phosphorus: protons   neutrons   electrons
    • A. 

      11 12 10

    • B. 

      1 0 2

    • C. 

      15 16 15

    • D. 

      20 20 18

  • 4. 
    An increase in atomic number is related to an increase in atomic mass because -
    • A. 

      More electrons are present in the atomic nucleus

    • B. 

      More electrons are orbiting the atomic nucleus

    • C. 

      More protons are present in the atomic nucleus

    • D. 

      More protons are orbiting the atomic nucleus

  • 5. 
    How many protons, neutrons, and electrons are in a neutral atom of sodium? 
    • A. 

      11 p+, 12 n0, 11 e-

    • B. 

      11 p+, 11 n0, 12 e-

    • C. 

      12 p+, 11 n0, 12 e-

    • D. 

      12 p+, 11 n0, 11 e-

  • 6. 
    Isotopes of an element have different - 
    • A. 

      Atomic numbers

    • B. 

      Mass numbers

    • C. 

      Numbers of protons

    • D. 

      Numbers of outer-shell electrons

  • 7. 
    Radioactive iodine-131 has a half-life of eight days. The amount of a 200.0 gram sample left after 32 days would be - 
    • A. 

      6.25 g

    • B. 

      12.5 g

    • C. 

      25.0 g

    • D. 

      50.0 g

  • 8. 
    Which of these conclusions can be drawn from Rutherford's experiment?
    • A. 

      Each atom contains electrons.

    • B. 

      The nucleus of an atom can be split.

    • C. 

      Each atom contains protons.

    • D. 

      Atoms are mostly empty space.

  • 9. 
    How does the radioactive isotope of C-14 differ from its stable counterpart C-12?
    • A. 

      It has a different number of protons and two less neutrons than C-12.

    • B. 

      It has the same number of protons and two more electrons than C-12.

    • C. 

      It has the same number of protons but two more neutrons than C-12.

    • D. 

      It has a different number of protons and two more neutrons than C-12.

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