* Member of the American Philosophical Society (1902)
*Lowell Lectures (1908)
* Davy Medal (1910)
* Faraday Lectureship (1911)
* Willard Gibbs Medal (1912)
* President of the American Chemical Society (1914)
* Nobel Prize in Chemistry (1914)
* Franklin Medal (1916)
* President of the American Association for the Advancement of Science (1917)
* Honorary Member of the Royal Irish Academy (1918)
* Foreign Member of the Royal Society of London (1919)
* President of the American Academy of Arts and Sciences President (1919 &ndash; 1921)
* Lavoisier Medal (1922)
* Le Blanc Medal (1922)
* Honorary Fellow of the Royal Society of Edinburgh (1923)
* Member of the International Atomic Weights Committee
* Theodore Richards Medal (1932, awarded posthumously)