Molecular Models 19-V512 178-Piece Original Giant Size Organic and Inorganic Model Set 50 atom parts

Includes durable plastic atom parts and links for assembling models Color-coded to national standards for ease of identification Manufactured by Molecular Models Company. Atom centers measure 2" in diameter for visibility during demonstrations Includes a cardboard box for storage 178-piece molecular model set with 50 atoms visually demonstrates inorganic molecules organic structures and other concepts of inorganic and organic chemistry for students in grades 7 through university