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Smallest particle of matter
                                                                           may or may not exist
                                                                                independently








                Atoms                                                 Masses are in the order

                                                                                           -24
                                                                                  off 10 g








                                                                       Comapred with 1/12th of the
                                                                          mass of one atom of C       12

                                                                           Relative atomic mass




















































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