Melting metals and minerals with sufficient heat

Solid, liquid, gas; change with temperature

The fact that water changes from solid (ice) to liquid (water) to gas (water vapor) state with increasing temperature is easy to observe. The following video, “How to Melt Soda Cans”, demonstrates that metals likewise melt if temperature is high enough. Liquid metal can be poured into molds to cast objects. This process of pouring heated, liquid metal into molds, a process called casting, is widely used in manufacturing all sorts metal parts of tools, machines, etc.

The minerals of rock likewise melt and become liquid at hight temperatures; witness flowing lava from a volcano.

http://video.nationalgeographic.com/video/short-film-showcase/follow-a-lava-rivers-mesmerizing-path-of-destruction?source=relatedvideo

Glass does not have a distinct melting point; with increasing temperature it gradually becomes “softer” and more malleable. This permits it blown and molded into countless shapes. The following video shows the making of a pitcher.

Not all substances melt with higher temperature. Wood and paper, for example, burn, turn to ash and gases given off to the air. They do not return to paper or wood as they cool. Please post any comments/questions.