Fill in the Blanks Characteristics of each group of plasticsOnline version Characteristics of each group of plastics. by Manuel Jesús García Rodríguez 1 Elastomers Thermoplastics high weakly repeated one low strongly Thermostable recycle melted Plastics can be classified in three groups : thermoplastics , thermostable plastics and elastomers . 1 . are the most abundant . They are made up of linked molecular chains . When we heat them , they become soft at temperatures , and they even can be , which allows them to adopt different shapes . The heating and cooling process can be many times , so they're easy to . 2 . plastics are made up of linked molecular chains . Therefore , they resist temperatures and they can only be shaped time . As a consequence , they are very difficult to recycle . 3 . are materials with great elasticity and resistance . They are also difficult to recycle .
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