Hi, Mike, Thanks for your thoughtful remarks.
True, silver is insoluble in DW. But that doesn't prevent silver from dispering into the DW as a non-sedimenting particulate. A good example of this Carey Lea silver, the very first form of colloidal silver ever discovered. Dmitri Mendeleyev describes this process on page 420 of his Principles Of Chemistry, Part IV. Also true is the fact that silver metal can carry current in opposite directions. But that does not preclude silver particulates from carrying negative static charge as easily as positive static charge. This is due to the energy bands in solid-state silver that do not exist in isolated atoms or ions of silver. A suspended crystal of silver can gain an electron as easily as lose an electron, even more easily than the suspended oil-drop did in Millikan's famous oil-drop experiment. Matthew
