London Dispersion Forces and Polarizability Quiz
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Questions and Answers

What type of crystal is formed by individual molecules held together by intermolecular forces?

  • Metallic crystal
  • Ionic crystal
  • Molecular crystal (correct)
  • Covalent network crystal
  • Which type of crystal has a very high melting point and is extremely hard?

  • Ionic crystal
  • Covalent network crystal (correct)
  • Molecular crystal
  • Metallic crystal
  • In a metallic crystal, what holds the nuclei and electrons of metals together?

  • Metallic bond (correct)
  • Ionic bond
  • Hydrogen bond
  • Covalent bond
  • Which structure has atoms that interlock, making them unable to move around easily?

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

    Which type of crystal has free-moving electrons that explain their low ionization energy?

    <p>Metallic crystal</p> Signup and view all the answers

    Which type of crystal is softer than ionic crystals and has low electrical conductivity?

    <p>Molecular crystal</p> Signup and view all the answers

    What is the main cause of London dispersion forces?

    <p>Instantaneous dipoles inducing opposite charges in nearby atoms</p> Signup and view all the answers

    How does polarizability change as the size of atoms in a molecule increases?

    <p>Polarizability increases</p> Signup and view all the answers

    Which intermolecular force has the greatest strength?

    <p>Hydrogen bonding</p> Signup and view all the answers

    What is the main contributing factor to the physical properties of substances like melting/boiling point and viscosity?

    <p>Intermolecular forces</p> Signup and view all the answers

    In a composite material, why do the different materials remain separate and distinct from each other?

    <p>Materials have different chemical/physical properties</p> Signup and view all the answers

    How does the strength of intermolecular forces impact the physical properties of solids?

    <p>Intense intermolecular forces influence melting/boiling points</p> Signup and view all the answers

    What is the term used to describe the situation when bonding electrons are shared unequally in a covalent bond?

    <p>Polar covalent bond</p> Signup and view all the answers

    In a polar covalent bond, the atom with a stronger pull on the bonding electrons has a ______ charge.

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

    What term is used for the charge separation in a covalent bond due to unequal sharing of electrons?

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

    Which of the following BEST describes electronegativity?

    <p>The ability of an atom to attract shared electrons in a bond</p> Signup and view all the answers

    What type of bond has an electronegativity difference less than 0.5?

    <p>Nonpolar covalent</p> Signup and view all the answers

    What term is used to describe a molecule with more than 2 atoms that can exhibit polar behavior?

    <p>Polyatomic molecule</p> Signup and view all the answers

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