Page 61 - The Periodic Table Book
P. 61

Uses                                   JOHAN GOTTLIEB GAHN

                      Pineapple                                           In 1774, Swedish chemist Johan Gottlieb
                                      Jefferson nickel                    manganese dioxide with charcoal – which
                            Oats                                          Gahn discovered manganese by reacting

                                                                          contains
                                                                          carbon –
                                                                          under a lot
                                                                          of heat. The
                                                                          carbon took
                                                                          the oxygen                                 Transition Metals
                           Mussel                                         away from the
                          Hazelnut                                        compound,
           Manganese-                                                     leaving
             rich food                                                    behind pure
                                                                          manganese.

                                      This US coin from
                                    World War II was made
                                     using manganese and
                                       silver because nickel               These steel
                                       was in short supply.                tracks have
                                                                           manganese added
                                                                           to them to make
                                                                           them stronger.



                                        Dry cell battery                       Unleaded petrol  This petrol contains a


                                                                                        manganese compound,
                                                                                        which is less toxic than lead.
                                                        Railway tracks

                                                    This battery contains            The black
                      Laboratory sample of pure manganese
                                                    manganese dioxide.               colour comes from
                                                                                     manganese dioxide.





                                                                                                   Purple glass bottle












                                                                                              This glass is coloured
                                                                                              by adding a manganese
                                                 Lascaux cave paintings, France          compound called permanganate.



           from mussels, nuts, oats, and pineapples. The       are also added to petrol and used to clean
           applications of manganese include its use in        impurities from glass to make it clear or to
           strengthening steel, which is used in making        give it a purple colour. In prehistoric times,
           railway tracks and tank armour. Certain dry         the compound manganese dioxide was
           cell batteries carry a mixture containing           crushed to make the dark colours used in
           manganese oxide. Manganese compounds                cave paintings.                                        59





   058-059_Manganese.indd   59                                                                                   05/01/17   2:49 pm
   56   57   58   59   60   61   62   63   64   65   66