EISCO Teacher Inorganic and Organic Chemistry Molecular Model Set 101 Pieces (51) Atoms (50) Bonds This teacher/student inorganic and organic molecular model set is the perfect set for introductory chemistry in the classroom. It contains the following parts: [10] Carbon (black) 4 Holes [15] Hydrogen (white) 1 Holes [6] Oxygen (red) 2 Holes [4] Nitrogen (blue) 4 Holes [4] Chlorine (green) 1 Holes [1] Chlorine (green) 4 Holes [1] Sulphur (yellow) 2 Holes [1] Sulphur (yellow) 4 Holes [1] Phosphorus (purple) 4 Holes [2] Bromine (orange) 1 Holes [2] Iodine (purple) 1 Holes [2] Metal (grey) 1 Holes [1] Metal (grey) 2 Holes [1] Metal (grey) 4 Holes [30] Short Bonds [10] Medium Bonds [10] Long (Flex) Bonds