Page 86 - The Periodic Table Book
P. 86

47
             Ag    Silver

                                                                                                  State: Solid
                                                                                   47    47    61 Discovery: c. 3000 bce

       Transition Metals            Pyrargyrite This mineral’s            Chlorargyrite  drawn into a 2-km-
             Forms

                                              colour changes
                                             to purple when it is
                                                                                            1 g (0.03 oz)
                                          exposed to bright light.
                                                                                           of silver can be
                                                                                          (1.2-mile-)
                                                                                            long wire.




                                                             The bright surface tarnishes
                                                                   after reacting with air.         of silver
                                                                                                      Chunk








                                               These large
                                               opaque
                                               crystals have a
                                               glistening sheen.










                       Acanthite

















               Black silver sulfide
               forms twisted crystals.



           Silver gets its symbol “Ag” from its Latin          nature, but mostly it is mined from ores, such
           name argentum, which means “shiny white”.  as pyrargyrite and acanthite. Because this
           It is considered a precious metal because its       element is valuable and can be moulded easily,
           pure form has a grey shine that does not            pure silver was used historically to make coins.
           corrode quickly, and it stays untarnished if        This metal is also ideal for making bracelets
    84     cleaned regularly. Silver can be found pure in      and settings for gems. Some people even use





   084-085_Silver.indd   84                                                                                      12/12/16   5:38 pm
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