Styrene 3D Molecular Model — CAS 100-42-5
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Free educational Styrene model (C8H8, CAS 100-42-5) with an engraved element symbol on every atom.
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Styrene (C8H8, CAS 100-42-5) — a free educational 3D molecular model for teachers and students, by MolGod.org. Element symbols are cut into each atom sphere: a self-labelled teaching aid.
Look at the skeleton first: Styrene contains one aromatic 6-membered ring, and students can trace 16 bonds (9 single, 1 double and 6 aromatic, drawn in Kekulé form). How many atoms can the class find? The engraved spheres give 8 C + 8 H, so the answer should be 16. Spot-the-group challenge: can students find the carbon-carbon double bond (C=C)? Plan it into a unit on aromaticity and delocalised electrons. Worth printing alongside it: p-Vinylbiphenyl (CAS 25232-08-0) and 4-Chlorostyrene (CAS 24991-47-7), structurally the nearest in the collection.
MolGod.org builds and releases these models at no cost for chemistry teaching. Teachers: hand out printed copies and ask students to rebuild the structural formula from the model.
Full record and more free models: https://molgod.org/molecule/100-42-5/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models
Licence & provenance: https://molgod.org/licenses/stl/100-42-5/
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Styrene-3D-molecular-model-engraved-CAS-100-42-5.stl
A ball-and-stick model of Styrene with each element symbol recessed into its atom sphere, generated by MolGod.org from a PubChem-computed 3D conformer (not an experimental crystal structure); atomic coordinates and connectivity are unchanged. STL mesh: 205,678 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.
Names in other languages: Styrol (de); styrène (fr); stirene (it); styreen (nl); styren (pl); 苯乙烯 (zh).
Chemical identity
CAS Registry Number: 100-42-5
Molecular formula: C8H8
Molar mass: 104.15 g/mol (exact mass 104.062600255)
IUPAC name: styrene
MolGod ID: MG_699-410-893-27 (https://molgod.org/id/MG_699-410-893-27)
PubChem CID: 7501 (https://pubchem.ncbi.nlm.nih.gov/compound/7501)
Wikidata: Q28917 (https://www.wikidata.org/wiki/Q28917)
EC number: 202-851-5
ChemSpider ID: 7220
InChIKey: PPBRXRYQALVLMV-UHFFFAOYSA-N
SMILES: C=CC1=CC=CC=C1
Required attribution (CC BY-SA 4.0): "Styrene 3D model by MolGod.org — https://molgod.org/molecule/100-42-5/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/