Que Interesante calls these Chemistry Crayon Labels a tool for teaching "children" about the periodic table of elements, and the chemical compounds they create. I think to be polite. Because I think 98% of adults out there, myself included, would have no idea that mercuric iodide is bright red-orange and abbreviated Hgl2 without either studying a textbook (boring!) or regularly interacting with a Crayola whose sticker tells them so (fun!)
Chemistry Crayon Labels come in sets of 24 adhesive-backed stickers. Featured colors / chemicals include Pheomelanin, Lithium Flame, Olivine, and Tetrachloro-Copper Complex. Nope, I have no clue what any of those are either. And nope, using Chemistry Crayon Labels won't teach any of us what they do or what they're for. But they're a start. A crayon that says "Resonite" instead of "Well-hydrated Urine Yellow" imparts at least a little knowledge or, if nothing else, develops familiarity and maybe ignites curiosity. That's more than a Bic can say for itself.
Chemistry Crayon Labels come in sets of 24 adhesive-backed stickers. They also include a sheet with information about which chemical should be stuck to which color crayon.