Matte

Matte

Matte, crude mixture of molten sulfides formed as an intermediate product of the smelting of sulfide ores of metals,…
Gold

Gold

Gold (Au), chemical element, a dense lustrous yellow precious metal of Group 11 (Ib), Period 6, of the periodic table.…
Natural gas

Natural gas

Natural gas, colourless highly flammable gaseous hydrocarbon consisting primarily of methane and ethane. It is a type of petroleum that commonly occurs…
Silicon carbide

Silicon carbide

Silicon carbide, exceedingly hard, synthetically produced crystalline compound of silicon and carbon. Its chemical formula is SiC. Since the late…
Phosphorus

Phosphorus

Phosphorus (P), nonmetallic chemical element of the nitrogen family (Group 15 [Va] of the periodic table) that at room temperature…
Cutlery

Cutlery

Cutlery, cutting implements, such as knives, razors, and scissors, used for industrial, commercial, and domestic purposes. History Prehistoric…
Bran

Bran

Bran, the edible broken seed coat, or protective outer layer, of wheat, rye, or other cereal grain, separated from the kernel.…