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Iodoform is the organoiodine compound with the formula CHI3. A pale yellow, crystalline, volatile substance, it has a penetrating and distinctive odor (in older chemistry texts, the smell is sometimes referred to as the smell of hospitals, where the compound is still commonly used) and, analogous to chloroform, sweetish taste. It is occasionally used as a disinfectant. It is also known as tri-iodomethane, carbon triiodide, and methyl triiodide.

To MOST  PEOPLE ,alcohol  is the  strong  stuff  in  beer,  wine, and  hard  liquor. But  to  a  chemist,  this  is just one  of many  alcohols.  Alcohols may be considered hydrocarbons in  which  one  or  more  hydrogen   (H)  atoms  are  replaced   by   

MANY   THOUSAND years  ago,  an   early   ancestor   of   yours  pushed  a  stick  into  the  hot  lava  flowing  from  an  erupting  volcano.  The  stick  burst  into  fire.  He  held  it  up  as  a  torch.  It  gave  off  light  and  heat  and  finally  turned  into  ashes.  This  ancient  man  might  be  considered  the  world's  first   chemist.  He  had   actually   taken   a   substance   called  wood  and  had,  by  a  chemical  process  called  combustion  or burning, turned  it into something  else.  The  discovery  of  the  use  of  fire  was  the  first  great  step  leading  to