Laughing Gas (1914 film) Laughing Gas (1914 film) Laughing Gas is a 1914 film starring Charlie Chaplin. The film is also known as Busy Little Dentist, Down and Out, Laffing Gas, The Dentist, and Tuning His Ivories. We are told Charlie is a dental assistant. He arrives at work where the patients are already waiting. He joins the tiny second dental assistant in the back room. They have a brief squabble then Charlie goes to the waiting room to clean the floor with a carpet sweeper. He bumps into a patient and a further squabble starts. Then back to the rear room for more
Chemical substance gasoline is not a single chemical compound or even a particular mixture: different gasolines can have very different chemical compositions, as "gasoline" is primarily defined through source, properties and octane rating. Every chemical substance has one or more systematic names, usually named according to the IUPAC rules for naming. An alternative system is used by the Chemical Abstracts Service (CAS). Many compounds are also known by their more common, simpler names, many of which predate the systematic name. For example, the long-known sugar glucose is now systematically named 6-(hydroxymethyl)oxane-2,3,4,5-tetrol. Natural products and pharmaceuticals are also given simpler names, for example