Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: This chemical physicist produced a theory of the change in specific heat with temperature, a method for X-ray diffraction analysis using powdered crystals, and the concept of permanent molecular dipole moments. He was also able to use his moments to show that water was bent and benzene was flat. In 1923 he and Huckel devised a theory of electrolytes that bear their names. FTP name this Dutch-American physicist after whom the unit of electric dipole moment is named.
Output:
Science