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Curated by: Khan Academy India - English (4 videos)
https://www.khanacademy.org/science/telangana-class-12-chemistry Polymers are macromolecules that are made of the same repeating unit. They are a major part of many of the materials we see around us and in this video we look into how we classify polymers – based on their source, their structure, mode of polymerization and intermolecular forces. We also look homopolymers and copolymers along the way. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! Timestamps: 00:00 : PET (polyethylene terephthalate bottles) 00:33 : Manufacture of PET bottles 01:05 : Chemical structure of PET – a polymer 01:44 : Monomers 02:16 : Classification of polymers based on source 03:38 : Classification of polymers based on structure 05:50 : Classification based on mode of polymerization - Addition 06:47 : Homopolymers vs copolymers 07:15 : Classification based on mode of polymerization – Condensation 08:41 : Classification based on strength of molecular forces 10:32 : Summary Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate