Chemistry Colorful Model Kit (239 Pieces) Molecular Model Atoms Bonds Product features chemistry model kits, -type, proportional molecular structure model, can be used to build a variety of common and slightly C, H, O, N,, I chemical molecular structure model, suitable for teaching and laboratory use. Compared to abstract chemical formulas and flat images, chemical molecular model kits can display chemical molecules more intuitive and three-dimensional, making it easier to learn and understand. The Chemistry Model Kit include 86 atoms & 153 link keys & 1 Short link remover tool, each molecular model kit set consists of 12 different of various colors. The 240 chemical molecular accessories are stored in a slim plastic case for convenient storage. Easy to connect: Our chemistry set is made of plastic, making chemical atoms and connections more secure. And it's easily separate atoms from the links with the short link remover tool. Because of Chemistry Molecular Model Kit different are composed of multi-colored and sizes, so they are easily identified and can visually demonstrate the structure and geometry of compounds be composed of different chemical molecules. Package Contents (239 Pieces): 86 Atoms: H - Hydrogen ---------- White * 30 C - Carbon -------------- Black * 15 O - Oxygen ------------- Red * 10 N - Nitrogen ----------- Blue * 4 S - Sulphur ------------- Yellow * 4 P - Phosphorus -------- Purple * 5 F - Fluorine ------------- Orange * 2 Halogen, ----- Green * 8 - Bromine ------------ Dark Blue * 2 I - Iodine ----------------- Dark Purple * 2 Metal --------------------- * 2 B - Boron ---------------- * 2 153 Bonds: Medium (single, rigid) -------------------- gray white * 60 Long (double/triple, flexible) ----------- gray * Short (for space-filling models) -------- Translucent * 60 V- (for space-filling models) ------ White * 8 Others: Short link remover tool * 1 Instruction Manual * 1 ABS Plastic Box * 1