CHEM 1212K Lecture Notes - Lecture 1: Torr, Heat Capacity, Jmol
Document Summary
Electrostatic: the ability of an object to acquire an electron. Bonds: holds matter together, trend on the periodic table: Phases: solid, liquid, and gas: spacing between molecules. Larger the molecule = stronger the force. Ch3ch2ch3 > ch3ch > ch4: if they are similar molecules. As the force increases so does the boiling point, bp. Dipole dipole interactions: occurs only between polar molecules. Van der waals: the category of forces. Include: london and dipole-dipole: short range of forces, very weak, very few interactions between molecules. Hydrogen bonding: similar to dipole- dipole, not a real bond, need: h-f, c-h, c-o, o-h. Hydrogen bond donor: lone electron pair. Ion dipole: strongest forces, only found in solutions, the molecule dissolves . Ex nacl dissolved into h2o: na+ and cl, ionic solution, like dissolves like . Polar with nonpolar: oil/h2o: need an ion/dipole: ionic substance, larger the charge = the greater the interaction.
