Journal #13

 Dmitri Mendeleev was just an ordinary boy living in Siberia when he decided to go to St. Petersburg to study science.  After graduating he thought about making something new.    He first made a book called Principles of Chemistry.  Then he started making the Periodic Table that had 63 elements on it.  The way it was arranged was by the atomic mass.  His very first one he made was based on arranging the elements in order of their increasing atomic weight.  He also grouped them in friendships with similar properties.  Then he predicted and admitted to the fact there was an error. Which led Dmitiri to make a minor change in the Periodic Table.  He added the rest of the elements that followed the same pattern that he found before.