CHEM 134- Midterm Exam Guide - Comprehensive Notes for the exam ( 96 pages long!)
16 Feb 2018
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Document Summary
The forces holding atoms together to form molecules. Forces between molecules, between ions, or between molecules and ions. In salt these are the strongest forces. Nacl, mp = 800 oc = 1470 of = 1470 or = 1070 k mgo, mp = 2800 oc = 5007 of = 5007 or = 3070 k. Water is highly polar and can interact with positive ions to give hydrated ions in water. This is the reason metal salts dissolve in water. Attraction between ions and dipole depends on ion charge and ion-dipole distance. A special form of dipole-dipole attraction, which enhances dipole-dipole attractions. H-bonding is especially strong in water because. The o h bond is very polar. There are 2 lone pairs on the o atom. Accounts for many of water"s unique properties. H-bonding is strongest when x and y are n, o, or f. Ice density is < liquid and so solid floats on.
