Unveiling Argentina's Origins and Nuclei's Mysteries
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Questions and Answers

Which force holds the nucleus of an atom together?

  • The electromagnetic force
  • The gravitational force
  • The weak nuclear force
  • The strong nuclear force (correct)

    • What is the defining characteristic of elements?

  • The number of electrons
  • The number of neutrons
  • The number of protons (correct)
  • The number of nucleons

    • What is the scientific definition of theory?

  • A guess
  • A proven fact
  • A hypothesis that has not been tested
  • A well-tested set of ideas that explains many disparate observations (correct)

    • Who mathematically proved the existence of atoms and molecules in 1905?

    <p>Einstein</p> Signup and view all the answers

    Each element is determined by

    <p>The number of protons</p> Signup and view all the answers

    What is chemistry?

    <p>The study of atoms and particles</p> Signup and view all the answers

    What does chemistry encompass?

    <p>The study of visible and abstract sciences</p> Signup and view all the answers

    What is the role of neutrons in an atom?

    <p>Neutrons stabilize the nucleus of an atom</p> Signup and view all the answers

    Why are relative atomic masses never whole numbers?

    <p>Because different isotopes of the same element exist</p> Signup and view all the answers

    Where does the interesting chemical reactions occur in an atom?

    <p>Electrons</p> Signup and view all the answers

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