Build large-scale models the whole class can see: this versatile system is perfect for front-of-class demonstrations and lectures.
The Unit molecular system features large (44mm diameter) spheres in seven colours to represent different atoms and 25mm diameter white spheres representing hydrogen atoms joined by a versatile peg system. Available as a large demonstration set, with either metal or plastic bonds or packs of individual atoms, pegs, accessories and rigid and flexible bonds for making custom molecular models.