The first metal discovered was copper. With this later discovery of other metals it was possible to develop more efficient tools than those of stone. Today, metals are easily found in our daily life. Ore are substances found in soils and rocks from where it is possible to extract metals. Some metals, such as iron and copper, are extracted from the ore already in the form to be used. Others, such as steel and bronze, need to be associated with other substances. There are many types of metals, coming today to the total of sixty-eight. Among them there are some very different, such as mercury, which is liquid, and sodium, which is light. The best known and used for many years are iron, copper, tin, lead, gold and silver. And this common material of our daily life can have several other applications. How about turning fashion with metal application? Several options for transforming your product are at www.lojaodosmetais. com.br.Fonte: http://bit.ly/2OAHziZ