Intermolecular Forces Lecture Notes PDF

Kinetic Molecular Forces (KMT) BY: MS. LANDAYAN Kinetic Molecular Theory This is a theory that explains how molecules move in different states of matter (solid, liquid, gas). Intermolecular forces Attractive forces between neighboring particles of one or more substances. Pulls the particles t...

Kinetic Molecular Forces (KMT) BY: MS. LANDAYAN Kinetic Molecular Theory This is a theory that explains how molecules move in different states of matter (solid, liquid, gas). Intermolecular forces Attractive forces between neighboring particles of one or more substances. Pulls the particles together. Kinetic Energy Keeps the particles at a distance and/or moving around. Kinetic energy is dependent on the temperature of the substance. Intermolecular forces of attraction lonic Compounds > Intermolecular forces between oppositely charged particles (ions). Covalent Compounds >Force of attraction between neighboring molecules >It is weaker than that between formula units because molecular attraction involves only partial charges. London Dispersion Forces London dispersion forces, or simply dispersion forces, are intermolecular forces of attraction that exist between all atoms and molecules. Moreover these are the only forces acting in nonpolar molecules. Dipole-Dipole forces Exist between polar molecules. Each polar molecule has unequal electron densities, resulting in a dipole- a partial positive end a partial negative end. Hydrogen Bonds Hydrogen bonds is a special type of dipole-dipole interaction that exists only in molecules that contain a hydrogen atom bonded to a small, highly electronegative atom such as N, O, or F. Ion-dipole Forces Acts between an ion (either positive or negative) and a polar molecule. THANK YOU FOR LISTENING