CHEM 1212 Lecture Notes - Lecture 2: Intermolecular Force, Atomic Orbital, Ionic Compound
Document Summary
Chemistry 1212 lecture 2 intermolecular forces. 11. 3 intermolecular forces: the forces that hold states together. Intermolecular forces: the attractive forces that exist between all molecules and atoms: the structure of the particles that compose a substance determine the strength of the imf. That determines whether the substance is a solid, liquid, or gas at a given temp. Strong imfs result in liquids and solids; high melting and boiling points. Weak imfs result in gases; low melting and boiling points: imfs originate from the interactions between charges, partial charges, and temporary charges on molecules/atoms/ions. Protons and electrons are attracted to each other because their potential energy decreases as they get closer together: likewise, molecules with partial/temporary charges are attracted to each other because their potential energy decreases as they get closer. The one imf present in all molecules/atoms; dispersion force: a. k. a london force.
