WHEN these metals are heated in a vacuous tube in such a way as to cause an extremely thin sublimate of the metal to condense upon the glass, the film so obtained will be found to possess a beautiful ...

THE two new sections of Dr. Friend's “Inorganic Chemistry” deal with (i) hydrogen, the alkali metals, the ammonium-compounds, and the coinage-group of metals, and (2) oxygen, jvater, and hydrogen ...

Many metals react with oxygen to form metal oxides. Potassium and sodium are soft metal which are easily cut exposing a shiny surface which changes to dull rapidly. The change from shiny to dull is ...