--- product_id: 273372273 title: "KEXMY Organic Chemistry Model Kit - Molecular Model Student or Teacher Pack with Atoms, Bonds and Instructional Guide, 239 Pieces" brand: "old nobby" price: "KD 27.99" currency: KWD in_stock: true url: https://www.desertcart.com.kw/products/273372273-kexmy-organic-chemistry-model-kit-molecular-model-student-or-teacher store_origin: KW region: Kuwait --- # Color-coded universal atoms Smart compartmentalized storage 239 precision pieces KEXMY Organic Chemistry Model Kit - Molecular Model Student or Teacher Pack with Atoms, Bonds and Instructional Guide, 239 Pieces **Brand:** old nobby **Price:** KD 27.99 **Availability:** ✅ In Stock ## Summary > 🧬 Build brilliance, bond success! ## Quick Answers - **What is this?** KEXMY Organic Chemistry Model Kit - Molecular Model Student or Teacher Pack with Atoms, Bonds and Instructional Guide, 239 Pieces by old nobby - **How much does it cost?** KD 27.99 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/273372273-kexmy-organic-chemistry-model-kit-molecular-model-student-or-teacher) ## Best For - old nobby enthusiasts ## Why This Product - Trusted old nobby brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Portable & Organized Storage:** Sturdy box with four compartments keeps your kit neat and travel-ready. - • **Comprehensive Learning Support:** Includes an 8-page starter guide to boost your chemistry skills. - • **Effortless Assembly & Disassembly:** Bonus link remover included to speed up model adjustments. - • **Master Organic Chemistry with Precision:** 239 meticulously crafted pieces for detailed molecular modeling. - • **Universal Color Coding for Instant Recognition:** Atoms follow global standards, making complex structures intuitive. ## Overview The Old Nobby KEXMY Organic Chemistry Model Kit features 239 color-coded plastic pieces designed to help students and teachers visualize molecular structures. It includes a detailed instructional guide and a bonus link remover for easy assembly and disassembly. Packaged in a durable, compartmentalized box, this kit is perfect for mastering organic chemistry concepts with convenience and precision. ## Description Old Nobby KEXMY Organic Chemistry Model Kit - Molecular Model Student or Teacher Pack with Atoms, Bonds and Instructional Guide, 239 Pieces ## Features - This Organic Chemistry Molecular Model Kits come with an Instructional Guide to easily identify all Atoms and Connectors, plus a Eight page Chemistry Starter Kit - Bonus link remover included to make the task of dissembling your Molecular Model Kit Structures super easy and fast - Delivered in a sturdy plastic box with four compartments for storage and portability - The Atoms are color coded to universal standards, making it easier for you - Smart box design with easy storage compartments for convenient storage ## Technical Specifications | Specification | Value | |---------------|-------| | Product Dimensions | 31.5 x 21.84 x 6.1 cm; 680 g | | Manufacturer recommended age | 15 years and up | | Item model number | ZY-ghm-0902-42 | | Educational Objective(s) | Chemistry Concept Development Skills | | Number of Puzzle Pieces | 239 | | Assembly Required | Yes | | Batteries Required? | No | | Batteries Included? | No | | Material Type(s) | Plastic | | ASIN | B01NCU854K | ## Product Details - **Size:** 239-Piece Kit - **Brand:** Old Nobby - **Theme:** Chemistry - **Age range (description):** Kid - **Material:** Plastic ## Images ![KEXMY Organic Chemistry Model Kit - Molecular Model Student or Teacher Pack with Atoms, Bonds and Instructional Guide, 239 Pieces - Image 1](https://m.media-amazon.com/images/I/81gT-4-SKsL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Does it come with some nitrogen blue holes 3 at 120 degree instead of 107 degree? carbon black holes 3 and 2, oxygen red holes 1 also helpful.** A: It sounds like you are interested in geometries of C, N, and O compounds which involve double and triple bonds and this means atoms that are trigonal planar (120 degree holes) and linear (180 degree holes). This kit does not have such atoms ( I don't know any kits that do) but does have trigonal bipyramid atoms (5 holes) that can be used for trigonal planar geometries and octahedral atoms (6 holes) that can be used for linear geometries. Be aware that few molecules actually have 120 degree bond angles owing to different electron pair repulsions of the various bonds and lone pairs. Therefore, rather than using the 5 hole atom for trigonal planar geometries of C and N, I think you are better off using the kit's existing C, N, and O atoms for bonding situations where these atoms have trigonal planar or linear geometries and using the long, flexible bonds to represent the double and triple bonds that are involved. This gives reasonable structures and clearly highlights the double and triple bonds. In my opinion, all model kits would be improved if the C, N, and O atoms were all tetrahedral (4 holes) so you could also include lone pairs of electrons in your model. Seeing these lone pairs is important to understanding the molecular geometry of molecules containing nitrogen and oxygen and more than compensates for larger errors in the bond angles. Another improvement for this kit would be to remove all but two of the 5-hole and 6-hole atoms (rarely needed) and increase the number of carbon and hydrogen atoms. **Q: Are the bonds flexible enough for representing chair configurations?** A: If you are referring to chair and boat configurations of cyclohexane the answer is yes since no bond flex is really required. If some flex is required for a particular molecule you have in mind you could use the longer flexible bonds to construct your model. It won't be beautiful but it will probably give an acceptable structure. **Q: Are the bonds easy to remove and put on? I have the molymod version and they require a lot of strength to put on and remove. Bummer.** A: Yeah super easy to put together and for the little short bonds that might be hard to grab there is a tool that comes with it to help pull them apart. **Q: Can this model make fisher projections?** A: Hi there S.M, There is an excellent youtube video that explains how to use the Molecular Kit with Fisher projections. It only goes for 2 minutes and sums it really well https://www.youtube.com/watch?v=tTc19BDXVG8 Anything else or how we can help, please let us know Regards Peter ## Frequently Bought Together - OLD NOBBY Organic Chemistry 239 Piece Model Kit - Molecular Model Kit with Atoms, Bonds, Instructional Guide, Bond Removal Tool, and Bonus Molecular Stencil - Organic Chemistry Reactions QuickStudy Laminated Reference Guide (QuickStudy Academic) - Organic Chemistry as a Second Language: First Semester Topics --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.kw/products/273372273-kexmy-organic-chemistry-model-kit-molecular-model-student-or-teacher](https://www.desertcart.com.kw/products/273372273-kexmy-organic-chemistry-model-kit-molecular-model-student-or-teacher) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-19*