CHEM 110 Study Guide - Final Guide: Black Body, Electron Diffraction, Stanislao Cannizzaro

• School: McGill University
• Department: Chemistry
• Course: CHEM 110
• Professor: Ashok Kakkar

Document Summary

Robert boyle - proposed practical definition of element. Avogadro invented the molecule: first to recognize water h2o and ammonia as nh3; Lavoisier provided first table of chemical elements. Joseph-louis gay-lussac famous for work on gas behavior. Andrew marie ampere proposed equal volume of gases contain equal number of particles; ampere"s hypothesis. Stanislao cannizzaro - set origin of avogadro"s hypothesis straight: enabled correct assignment of relative atomic/molecular weights. Dmtriy ivanovich mendeleev wrote first period table of elements. He even left blanks in prediction of elements yet to be discovered. J. j. thomson reported that cathode rays were negatively charged particles about. 1000 times lighter than a hydrogen atom: proposed plum-pudding model. Becquerel reported that uranium compounds emit radiation that darkens the photographic plate. Marie & pierre curie - establish that radioactivity is found in other elements & isolated 2 new highly radioactive elements polonium & radium. Ernest rutherford named radiation as alpha particles.