NATS 1880 Lecture Notes - Chemical Polarity, Surface Tension, Heat Capacity
8 Feb 2013
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Document Summary
National post= 300 meter wide asteroid with remote possibility of striking earth in 2036 to pass by today. Has the largest temperature range liquid = water. Advantages of water= water is polar molecule which means that. Oxygen has 8 protons and 8 neutrons and 8 electrons when it combines with hydrogen. Polarity comes from the uneven change distribution within a molecule. Polar molecule= minerals dissolve within it and in chemical bonding. Essential for protection of cell interiors do not dissolve in water = cell membranes. Hydrogen bonds is responsible for ice being less dense than water allowing water to float. If ice form bottom to top all life will die. Ice form from the top insulates protect life in the pond and allows the extreme temperatures. Water has: solvent, polar molecule, liquid over wide range of temps, solid water floats, high heat capacity, high surface tension.
