Terephthaloyl chloride 3D Model — CAS 100-20-9

Terephthaloyl chloride (C8H4Cl2O2, CAS 100-20-9) — a free educational 3D molecular model for teachers and students, by MolGod.org. Each atom is labelled with its own engraved element symbol: no colour chart needed. Ask students to describe the framework of Terephthaloyl chloride before anything else: one aromatic 6-membered ring. Then count the bonds together; there are 16 (8 single, 2 double and 6 aromatic, drawn in Kekulé form). Counting task: 8 C + 4 H + 2 Cl + 2 O gives 16 engraved spheres;…

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