Polymeric beads, expandable evolving flammable vapour

Guita percha is an isomer (transpolyisoprene) of natural rubber made from the latex of various trees of the genus Dichopsis. It is not as elastic as rubber, but becomes highly plastic on gentle heating. It is used chiefly for insulation of submarine cable. It is similarly soluble in organic solvents and carbon disulphide. 

Plastics are solid in their finished shape but can be classified into two types  

---