Atoms, Compounds, And Elements Pretest

10 Questions | Total Attempts: 305

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Pretest Quizzes & Trivia

This quiz is a pretest to the physical science unit (8th grade level) which covers atomic theory, atomic structure, molecules, compounds, and elements.


Questions and Answers
  • 1. 
    What contribution to the atomic theory did Neils Bohr make?
    • A. 

      He discovered the electron.

    • B. 

      He theorized a model of atomic structure

    • C. 

      He discovered the proton.

    • D. 

      He viewed an atom for the first time using an instrument.

  • 2. 
    Which of the following are parts of an atom? (Choose all that apply)
    • A. 

      Neutron

    • B. 

      Compound

    • C. 

      Electron

    • D. 

      Nucleus

    • E. 

      Atomic bond

    • F. 

      Proton

    • G. 

      Element

    • H. 

      Electron shell

  • 3. 
    Where in the atom are the electrons found?
    • A. 

      Inside the nucleus

    • B. 

      Outside the nucleus

    • C. 

      Orbitting through the nucleus

  • 4. 
    What makes an atom able to form a compound?
    • A. 

      Same number of protons as electrons

    • B. 

      Different number of neutrons than protons

    • C. 

      Unfilled outer electron shells

    • D. 

      A positive or negative charge of the nucleus

  • 5. 
    What charge does the nucleus of the atom have?
    • A. 

      Positive

    • B. 

      Neutral

    • C. 

      Negative

  • 6. 
    Which scientists was the first to use the term "atom"?
    • A. 

      Democritus

    • B. 

      John Dalton

    • C. 

      JJ Thomson

    • D. 

      Albert Einstein

  • 7. 
    How does an isotope differ from another atom of the same element?
    • A. 

      The number of neutrons is different

    • B. 

      The number of protons is different

    • C. 

      The number of electrons is different

    • D. 

      The shape is different

  • 8. 
    A pure substance that cannot be separated into simpler substances is called a(n)
    • A. 

      Isotope

    • B. 

      Atom

    • C. 

      Element

    • D. 

      Compound

  • 9. 
    A pure substance that is composed of two or more elements that are chemically combined is a(n)
    • A. 

      Isotope

    • B. 

      Atom

    • C. 

      Element

    • D. 

      Compound

  • 10. 
    The particle(s) that make up the mass of an atom is (are)
    • A. 

      Electrons

    • B. 

      Neutrons

    • C. 

      Protons

    • D. 

      Electron shells

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