The ATOMOD™2 Organic can be used to make quality, colour-coded 3D models of different substances. This set enables each student to make models of water, ammonia, methane, carbon dioxide, alcohols, acids, esters, chloro-hydrocarbons, and many other substances. The models are easy to assemble and come complete with clearly illustrated instructions. Supplied in a plastic storage box, containing six separate bags of atoms and bonds. Contents:. 10 Hydrogen atoms, White, 1 hole. 4 Carbon atoms, Black, 4-hole. 2 Oxygen atom, Red, 2-hole. 3 Chlorine atoms, Green,1-hole. 1 Nitrogen atom, Blue, 4-hole. 20 Medium Grey Links. 4 Long Flexible Grey Links.