12/8 - Notes: Part 4: History of the Periodic Table

Last updated over 3 years ago

5 questions

       ------- _______ created the first periodic table of elements in 1869

He began to notice patterns when he arranged the elements by increasing _______ 

When the patterns didn’t quite fit, Mendeleev left _______  where there were missing elements.

 He used his knowledge of the patterns to predict the existence of _______ elements as  most impressively, predicting their _______ .

In 1913, a British chemist named Henry Mosely rearranged Mendeleev’s periodic table by increasing  _______ , which fixed several of the issues with the earlier table.