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GCSE Chemistry – Condensation Polymers (Polyesters) (2026/27 exams)

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*** WHAT’S COVERED ***
1. Intro to Condensation Polymers.
2. How Polyesters are Formed.
* Reaction between dicarboxylic acid monomers and diol monomers.
* Explanation of the condensation reaction mechanism.
3. Representing Polyesters.
4. Key Conditions for Condensation Polymerisation.
5. Specific Example: Formation of Poly(ethyl ethanoate).
6. Biodegradability of Polyesters.

*** EXAM BOARD INFO ***
AQA – Separate/triple science and higher tier only
IGCSE Edexcel – Separate/triple science and higher tier only
Edexcel – Separate/triple science and higher tier only
OCR 21st Century – Separate/triple science and higher tier only
OCR Gateway – Separate/triple science and higher tier only

*** CHAPTERS ***
0:00 Intro to Condensation Polymers & Polyesters
0:28 Monomers for Polyesters (Dicarboxylic Acid & Diol)
1:14 Forming the Ester Link & Water Molecule
1:55 Drawing the Repeat Unit
2:25 General Equation for Polyester Formation
3:38 Requirements for Condensation Polymerisation
4:22 Specific Example: Ethanedioic Acid + Ethanediol
4:35 Biodegradability of Polyesters

*** PLAYLISTS ***

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