---
product_id: 655936578
title: "Lessons in Chemistry Model Kit - Old Nobby 239 Pc Molecular Set Organic Chemistry for Students - Complete Molecular Model Kit for STEM, Visualizing Atoms, Bonds and Structures"
brand: "old nobby"
price: "HK$405"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/655936578-lessons-in-chemistry-model-kit-old-nobby-239-pc-molecular
store_origin: HK
region: Hong Kong
---

# flexible, durable bonds 239 color-coded pieces compact, travel-ready case Lessons in Chemistry Model Kit - Old Nobby 239 Pc Molecular Set Organic Chemistry for Students - Complete Molecular Model Kit for STEM, Visualizing Atoms, Bonds and Structures

**Brand:** old nobby
**Price:** HK$405
**Availability:** ✅ In Stock

## Summary

> 🔬 Unlock the molecular world—because your STEM game deserves the best!

## Quick Answers

- **What is this?** Lessons in Chemistry Model Kit - Old Nobby 239 Pc Molecular Set Organic Chemistry for Students - Complete Molecular Model Kit for STEM, Visualizing Atoms, Bonds and Structures by old nobby
- **How much does it cost?** HK$405 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/655936578-lessons-in-chemistry-model-kit-old-nobby-239-pc-molecular)

## 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

- • **Built for Repeated Use:** High-quality materials ensure this kit withstands rigorous study sessions.
- • **On-the-Go STEM Mastery:** Compact, durable case keeps your molecular models organized anywhere.
- • **Bridge Theory with Practice:** Transform abstract chemistry concepts into interactive, visual experiences.
- • **Effortless Assembly & Exploration:** User-friendly design means no time wasted—just pure hands-on learning.
- • **Visualize Complex Molecules Instantly:** 239 precision color-coded atoms and bonds bring chemistry to life.

## Overview

The Old Nobby 239 Pc Molecular Set is a comprehensive, durable chemistry model kit designed for students and professionals to visualize atoms, bonds, and molecular structures. Featuring 239 color-coded pieces and flexible bonds in a compact, travel-ready case, it supports hands-on learning and repeated use in classrooms, labs, or on the go.

## Description

Lessons in Chemistry Model Kit - Old Nobby 239 Pc Molecular Set Organic Chemistry for Students - Complete Molecular Model Kit for STEM, Visualizing Atoms, Bonds and Structures

## Features

- Comprehensive Chemistry Kit: This chemistry molecular model kit includes 239 pieces with color-coded atoms and flexible bonds; helps students and teachers easily visualize complex structures
- Portable and Organized: A durable compact case keeps this chemistry set neatly stored and travel-ready; ideal for students, teachers, or professionals who need an organized tool for learning anywhere
- Built to Last: Made from strong, dependable materials; this molecule modeling kit is designed for repeated classroom, lab, or self-study use; provides lasting value for learners at any level
- Quick Easy Assembly: User-friendly design makes this molecule building kit simple to put together and disassemble; explore bonding configurations efficiently without wasted time or frustration
- Engaging Hands-On Learning: This chemistry model kit bridges theory and practice; enhances understanding of organic and inorganic chemistry concepts through interactive, visual demonstrations

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Theme | chemistry |
| Item Dimensions | 12.4 x 8.6 x 2.4 inches |
| Item Weight | 680 Grams |
| Size Name | 239-Piece Kit |

## Images

![Lessons in Chemistry Model Kit - Old Nobby 239 Pc Molecular Set Organic Chemistry for Students - Complete Molecular Model Kit for STEM, Visualizing Atoms, Bonds and Structures - 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

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-31*