EAS 1540 Lecture Notes - Lecture 14: Chemical Polarity, Heat Capacity, Kilogram
27 Jun 2016
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Document Summary
Highly polar molecule (has a strong positive charge on one end and a highly negative charge on the other) Hydrogen bond: an electrostatic attraction between partial + and - charges of water molecules. Weak, but allow water molecules to temporarily bond with others in order to create liquid water. Two forced determine the structure of water in its 3 phases: Forms a regular crystal lattice, low thermal motion. Amount of heat needed to raise one gram of a substance by 1 degree. Water"s is among the highest of any substance on earth. Amount of heat needed to convert one gram of a liquid substance into a vapor. 540 calories a gram for water, also among the highest. Remove heat energy and stores it in the form of water vapor (latent heat). Condensation = latent heat released by clouds and rain, evaporation = latent heat removed and stored in the atmosphere.
