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The reaction of a copper penny and concentrated nitric acid (15 M) is shown. Red-brown nitrogen dioxide is generated and some of the copper dissolves to form a blue solution of copper(II) nitrate. [2 minutes]
Video demonstrating chemical reaction when carbon dioxide is placed in water. A lump of solid carbon dioxide is placed in water containing a few drops of universal indicator. The indicator changes to an acid...
This film, produced in the Lawrence Radiation Laboratory of the University of California, Berkeley, features four scientists who were principals in the discovery and identification of several of the...