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Java Games: Flashcards, matching, concentration, and word search. |
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Chemistry - Periodic Table Discoveries
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| John Dalton | Law of Multiple Proportions, the modern atoomic concept |
| Jons Jacob Berzelius | developed our system of symbols for the elelments, did research on combining weights of over 40 elements |
| Johann W, Dobereiner | recognized "triads", groups of three elements having similar properties, these became known as his "triplets" |
| Jean Stas | by 1860, he had determined accurate atomic weights for the 60 known elements at that time |
| John Newlands | when he arranged the known elements by increasing atomic weight, he discovered every eighth element was a member of a triplet, he named this the law of octaves |
| Dmitri Mendeleev | invented the periodic table |
| Ektasilicon | Germanium |
| Sir William Ramsay | discovered the Noble Gases |
| Henry Moseley | using x-ray diffraction, was able to "count" the protons in the atomic nucleus, this became the atomic number and determines the order of elements on the modern periodic table |
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Noble Township Educational Services |
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