Chemistry Molecular Model Kit Organic And Inorganic Modeling Set Science Teaching Learning Aids For Teacher Students free deliveryThis is a kind of quality chemistry molecular model kit, which is made of eco-friendly plastics material, wear resistance and can provides long service time. Uses spheres to represent atoms and s-ticks to represent chemical bonds. Easy to install and easy to detach, easy to build models for organic and inorganic chemistry. Help teachers and parents to cultivate childrenand39 s interest in chemistry, makes learning chemical 3D molecule or atomic structures fun and interactive. Have a try.Features:Made of eco-friendly plastics material, with smooth surface, no scraps or cutting edges from the holes, wear resistance and can provides long service time.Uses spheres to represent atoms and s-ticks to represent chemical bonds.Can be used to build methane ball-and-stick model, ethane ball-and-stick model, ethylene ball-and-stick model, ethyne ball-and-stick model,