gold

As a precious metal, gold has good physical properties. It has a high melting point, reaching l064.43 degrees Celsius. 'Real gold is not afraid of fire' means that gold is not easy to melt under normal flames. The density is large, 19.31 g/cm3 (at 18°C), and the hand feels heavy. Good toughness and ductility. As a precious metal, gold has good physical properties. It has a high melting point, reaching 1064.43 degrees Celsius. 'Real gold is not afraid of fire' means that gold is not easy to melt under normal flames. The density is large, 19.31 g/cm3 (at 18°C), and the hand feels heavy. Good toughness and ductility, good conductivity. Pure gold has a brilliant yellow, but the color changes greatly after being mixed with other metals. For example, gold-copper alloys are dark red, and silver-containing alloys are light yellow or off-white. Gold is easily ground into powder, which is the reason why gold is scattered in nature. Pure gold jewelry is also easy to wear and reduce its weight. Previous: Don't wear gold with germanium and silver Next: The grade of gold jewelry