Introduction to Chemical Level: Atoms and Atomic Structure
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Questions and Answers

What is the significance of the atomic number in an atom?

  • It indicates the position of the atom in the periodic table
  • It defines the number of electrons in an atom
  • It determines the chemical properties of the atom (correct)
  • It determines the mass number
  • What are isotopes based on?

  • Electron cloud distribution
  • Mass number (correct)
  • Valence electrons
  • Atomic weight
  • How is the atomic weight calculated?

  • By multiplying the atomic mass by the number of electrons
  • By adding the atomic number and the mass number
  • By averaging the different atomic masses and isotopic proportions (correct)
  • By summing the valence electrons and neutron count
  • Which subatomic particle has a neutral charge?

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

    What is the function of the valence shell in an atom?

    <p>Determines bonding properties</p> Signup and view all the answers

    What determines the reactivity of an atom?

    <p>Electrons in the electron cloud</p> Signup and view all the answers

    Which term describes a pure substance composed of atoms of one kind?

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

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