borax-bead test A preliminary test in qualitative inorganic analysis that can be a guide to the presence of certain metals. A small loop is made in the end of a platinum or Nichrome wire and heated in a Bunsen flame until red hot. It is then dipped into powdered borax, and the adhering solid is
A diagram for a two-component liquid system representing both the variation of the boiling point and the composition of the vapor phase as the liquid-phase composition is varied. A mixture of A and B at composition L₁ would have a boiling point T₁ and a vapor composition V₁, which when condensed would give a liquid
A furnace for producing iron from iron(III) oxide. A mixture of the ore with coke and a flux is heated by preheated air blown into the bottom of the furnace. The flux is often calcium oxide (from limestone). Molten pig iron is run off from the bottom of the furnace.