CHEM 1035 Final Exam Study Guide 2023

Weakest forces, exist in all substances, only force in non-polar substances, form temporary dipoles - AnswerLondon or Dispersion forces Dispersion forces ____ with increasing molar mass - Answerincrease Stronger than dispersion forces, only present in polar substances, attraction between oppositely charges ends of polar molecules - AnswerDipole-dipole forces Dipole-dipole forces ____ with increasing molar mass - Answerincrease 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 - AnswerHydrogen bonds Hydrogen bonded substances have ____ boiling points - Answerhigh The strength of hydrogen bonds _____ when ____ H-bonding sites are present - Answerincrease, 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 - AnswerIon-dipole forces dispersion, dipole-dipole, hydrogen bonding, ion-dipole - AnswerIntermolecular forces in order on increasing strength The ____ the intermolecular forces the higher the boiling point - Answerstronger For substances with the same type of intermolecular forces the boiling point __ with increasing molar mass - Answerincreases Viscosity is dependent on - Answerintermolecular forces and temperature Viscosity _____ with increasing temperature - Answerdecreases Viscosity _____ with stronger intermolecular forces - Answerincreases Surface tension is dependent on [2 things] - Answerintermolecular forces and temperature Surface tension ____ with stronger intermolecular forces - Answerincreases Surface tension _____ with increasing temperature - Answerdecreases Vapor pressure is dependent on - Answerintermolecular forces and temperature Vapor pressure ____ with stronger intermolecular forces - Answerdecreases