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Link to the video with interactive exercises: https://h5p.org/node/68328 Learning objectives: they name and describe the chain configuration and chain conformation of plastics. they name and describe the molecular weight distribution of plastics. 00:00 – Intro 00:27 – Plastics, hierarchy of structure 01:16 – The polymer single chain 01:48 – The chemical structure of the chain – chain configuration 03:07 – Constitution of plastics 07:39 – Tacticity 10:16 – Head-tail and head-head linkage 10:52 – Branching of macromolecules 12:04 – Cross-linking of macromolecules 13:07 – Copolymers 13:58 – The spatial structure of the chain – chain conformation 14:40 – Molecular weight distribution