OCG 301 Lecture Notes - Lecture 13: Heat Capacity, Surface Tension, Boiling Point
Document Summary
Cohesion: ability of water molecules to stick to each other, creating surface tension. Adhesion: tendency of water molecules to stick to other substances. H2o molecules become oriented into a regular tetrahedral structure, occupying more space. Ice floats because the density of ice is lower than the density of liquid water. Heat: energy produced by the random vibrations of atoms or molecules. Temperature: an objects response to input or removal of heat. Heat capacity: is a measure of the heat required to raise the temperature of 1g of a substance by 1 oc. Only way to affect their concentrations is via evaporation or precipitation. Na+ 55% , cl- 30%, mg2+ 4%, so4. Salinity is the total quantity of dissolved inorganic solids in water. Principle of constant proportions (used to measure overall salinity. ) Chloride can be determined with great accuracy. Colligative properties (properties caused by presence of salt)
