A thermoplastic is a type of plastic made from polymer resins that becomes a homogenized liquid when heated and hard when cooled.
As similar as colonial iron manufacture was to that of medieval Europe, yet it differed greatly from the type of iron manufacture in eighteenth century early modern Europe. Existing conditions of natural resources greatly affected the development of technical innovation in the field of iron manufacture.
Periodic Table of Elements. Iron was first discovered by the Egyptians in 4000 BC to make weapons and tools. This is called Iron Age because of the widespread use of iron. Iron comes from Latin word ferrum. It is reactive element, becomes rusty when exposed to damp air. This process is known as corrosion.