Skip to main content
Pearson+ LogoPearson+ Logo

Chemical Bonds quiz #1 Flashcards

Chemical Bonds quiz #1
Control buttons has been changed to "navigation" mode.
1/10
  • What is the difference between intramolecular and intermolecular chemical bonds?
    Intramolecular bonds exist within a molecule, holding atoms together (such as ionic and covalent bonds), while intermolecular bonds occur between different molecules (such as hydrogen bonds, dipole-dipole interactions, and van der Waals forces).
  • How do ionic, polar covalent, and nonpolar covalent bonds differ in terms of electron sharing and electronegativity?
    Ionic bonds involve the transfer of electrons between atoms with large electronegativity differences; polar covalent bonds involve unequal sharing of electrons between atoms with moderate electronegativity differences; nonpolar covalent bonds involve equal sharing of electrons between atoms with similar or identical electronegativities.
  • What determines whether a covalent bond is polar or nonpolar, and how does this relate to molecular polarity?
    The difference in electronegativity between bonded atoms determines if a covalent bond is polar (unequal sharing) or nonpolar (equal sharing). Molecular polarity also depends on the shape of the molecule and the direction of bond dipoles.
  • Describe the three main types of non-covalent intermolecular forces and provide an example of each.
    Hydrogen bonds occur between hydrogen and electronegative atoms (e.g., between water molecules); dipole-dipole interactions occur between polar molecules (e.g., between carbonyl groups); van der Waals forces are weak attractions present between all molecules, including nonpolar ones (e.g., between hydrogen gas molecules).
  • What is the main distinction between intramolecular and intermolecular chemical bonds?
    Intramolecular bonds exist within a molecule, holding its atoms together, while intermolecular bonds occur between different molecules.
  • How do ionic, polar covalent, and nonpolar covalent bonds differ in terms of electron sharing?
    Ionic bonds involve the transfer of electrons, polar covalent bonds involve unequal sharing of electrons, and nonpolar covalent bonds involve equal sharing of electrons.
  • What role does electronegativity play in determining the type of chemical bond formed between two atoms?
    A large difference in electronegativity leads to ionic bonds, a moderate difference leads to polar covalent bonds, and little or no difference leads to nonpolar covalent bonds.
  • How can a molecule with polar covalent bonds still be nonpolar overall?
    If the molecule's shape causes the bond dipoles to cancel each other out, the molecule can be nonpolar even if it contains polar covalent bonds.
  • What are the three main types of non-covalent intermolecular forces, and give an example of each?
    Hydrogen bonds (e.g., between water molecules), dipole-dipole interactions (e.g., between carbonyl groups), and van der Waals forces (e.g., between hydrogen gas molecules).
  • What is a hydrogen bond and which atoms are typically involved in forming it?
    A hydrogen bond is an interaction between a hydrogen atom and an electronegative atom such as nitrogen, oxygen, or fluorine on a different molecule.