Набор из 444 предметов Молекулярная модель (444 PCS 136 Atoms) Молекулярная структура Модель

型号：SW-C444 444件套有机无机化学分子结构模型

Total 444 PCS(294 PCS + 150 PCS):

294 PCS  (136 Atoms & 154 Links & 3 Orbitals & 1 Short link remover tool)

150 PCS Carbon 60 (60 Small Atoms & 90 Links)

本厂产品已经通过欧盟ce认证（EN71）和 美国CPC认证，放心在国外推广使用!

单套含塑料盒重量 0.95 kg，塑料盒尺寸 23.5 * 17 * 7 cm

装箱尺寸一： 36 * 27 * 36 cm，一箱10套，毛重10kg，净重9.5kg

本套产品，默认英文说明书。

外贸出口畅销产品之一，月出口几千套，Amazon，eBay 大卖家心选套装产品，欧美学生常用教学原子分子结构套装模型！

Chemistry Molecular Model Kit (444 PCS)

SW-C444 The 444 PiecesChemistry Molecular Model Set allows you to visualize the bonds between atoms in three dimensions. The elements are represented by colored balls and the bonds by flexible rods. Each atom has the same number of holes as the number of valence electrons it needs to complete its outer shell. For example, Carbon has four electrons in its outer shell, so it needs four more to be complete. The black carbon ball has four holes, allowing it to form four bonds and gain the electrons it needs.With this set you can demonstrate single bonds using the short white rods, and double or triple bonds using the long gray rods. This molecular model kit enables users to build virtually simple and complex organic and inorganic molecules. Just have a try!