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The Nobel Prize in Chemistry 1934

Harold Clayton Urey

Patryk Jewiak

on 1 March 2018

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Transcript of The Nobel Prize in Chemistry 1934

Harold Clayton Urey
was an American Chemist whose pioneering work on isotopes earned him the Nobel Prize in Chemistry in 1934 for the discovery of deuterium
(heavy hydrogen).
Other Awards
Franklin Medal 1943
Early Life
Educated in an Amish grade school which he graduated at age 14,
Attended High School in Kendallville, Indiana,
Earned a Teacher's Certificate from Earlham College,
Attended University of Montana to get his Bachelor of Science degree.
Harold Clayton Urey
The Discovery
Applications of the Discovery
1. By using Urey's heavy hydrogen, chemists were able to produce Heavy Water
2. In turn, heavy water is used in certain types of nuclear reactors, where is acts as a neutron moderator to slow down neutrons.
Other chemist thought there might be a form of hydrogen atom with twice the mass of the ordinary hydrogen atom (a heavy isotope) although if it existed at all, it would only be in a small concentration. Urey said that if liquid hydrogen was slowly evaporated, most of the heavy hydrogen would remain in the liquid residue.
Prize-winning Discovery
The Nobel Prize in Chemistry 1934
Authorship: Patryk Jewiak
(29th April 1893- 5th January 1981)
J. Lawrence Smith
Medal 1962
Gold Medal of the Royal Astronomical Society in 1966
Priestly Medal of the
American Chemical Society 1973
National Medal of Science 1964
Harold Urey
He produced a liquid residue that had enough heavy isotopes to be detected through a spectroscope.
Urey's Hypothesis
Regular Hydrogen vs. Heavy Hydrogen
Heavy Water
Google Image Result for Http://upload.wikimedia.org/wikipedia/commons/thumb/2/29/Urey.jpg/240px-Urey.jpg." Google Image Result for Http://upload.wikimedia.org/wikipedia/commons/thumb/2/29/Urey.jpg/240px-Urey.jpg. N.p., n.d. Web. 13 Oct. 2014.
Heavy Water - Google Search." Heavy Water - Google Search. N.p., n.d. Web. 13 Oct. 2014.
Full transcript