CHEM 1035 Final Exam Study Guide 2023 - Virginia Tech (Guaranteed A+)

Weakest forces, exist in all substances, only force in non-polar substances, form temporary dipoles correct answers London or Dispersion forces Dispersion forces ____ with increasing molar mass correct answers increase Stronger than dispersion forces, only present in polar substances, attraction between oppositely charges ends of polar molecules correct answers Dipole-dipole forces Dipole-dipole forces ____ with increasing molar mass correct answers increase Very strong dipole force, only exist in compounds where H is covalently bonded to O, N, or F, due to high electronegativity difference in H and O, N, or F correct answers Hydrogen bonds Hydrogen bonded substances have ____ boiling points correct answers high The strength of hydrogen bonds _____ when ____ H-bonding sites are present correct answers increase, more Intermolecular forces between 2 different substances, between an ion and a polar molecule, attraction between oppositely charged ends of polar molecule and positive/negatively charged ion correct answers Ion-dipole forces dispersion, dipole-dipole, hydrogen bonding, ion-dipole correct answers Intermolecular forces in order on increasing strength The ____ the intermolecular forces the higher the boiling point correct answers stronger For substances with the same type of intermolecular forces the boiling point __ with increasing molar mass correct answers increases Viscosity is dependent on correct answers intermolecular forces and temperature Viscosity _____ with increasing temperature correct answers decreases Viscosity _____ with stronger intermolecular forces correct answers increases Surface tension is dependent on [2 things] correct answers intermolecular forces and temperature Surface tension ____ with stronger intermolecular forces correct answers increases Surface tension _____ with increasing temperature correct answers decreases