How is plastic (for toys, torches) made?
This is the type of problem associated with it.
tricky matter. look into onto search engines like google. that can help!
Plastic is a material which is formed of polimers. Polimers get distant each other when heated, and stick together when get cold. This property provides plastics to be gived shape easily. Polimers is a building stone for polimer chains. And a polimer chain means plastic. The main source of polimers is petrol.
