Molecular Model – Large Demonstration Set (Classroom Demonstration Kit)

This impressive Large Molecular Demonstration Set allows teachers to build clear, oversized molecular structures that the entire class can see. Using the Unit™ system, the set features 44mm diameter spheres in seven different colours to represent a wide range of atoms, plus a 25mm white sphere specifically for hydrogen.

Atoms connect using sturdy pegs and a choice of rigid aluminium tubes or flexible vinyl tubes (ideal for representing double bonds) and can be arranged at any bond angle. A full range of supplementary atoms, bonds, and orbitals is also available for extended modelling.

The complete set contains: 70 atoms, 144 pegs, and 90 bonds.

Key Features

• Large 44mm spheres in seven colours to represent different atom types
• 25mm white sphere for hydrogen atoms
• Builds large, highly visible molecular models ideal for demonstrations
• Includes rigid aluminium and flexible vinyl tubes for different bond representations
• Sturdy pegs allow atoms to join securely at any bond angle
• Compatible with supplementary Unit™ atoms, bonds, and orbitals
• Set includes 70 atoms, 144 pegs, and 90 bonds
• Durable components designed for repeated classroom use

Ideal for School Science Lessons

Perfect for KS3, GCSE, and A‑Level Chemistry, this demonstration set helps students visualise and understand molecular structure in a clear and engaging way. It can be used to teach:

• Covalent bonding and molecular geometry
• Simple and complex organic molecules
• Bond angles and spatial arrangements (VSEPR theory)
• Representation of single, double, and triple bonds
• Understanding functional groups and chemical structures
• Demonstrating 3D molecular models to whole classes

With its large, durable components, this Molecular Model Demonstration Set is an essential teaching resource for helping students grasp key chemical concepts through clear, hands‑on visualisation.