CHEM 1210 Lecture Notes - Lecture 3: Cathode Ray Tube, Partial Pressure, Ernest Rutherford

• School: Ohio State University
• Department: Chemistry
• Course: CHEM 1210
• Professor: Shiyu Zhang

Document Summary

Democritus was the first to use the term atom . Aristotle had the idea of 4 essences (this was incorrect) Atoms can be neither created nor destroyed. If you break down water, you do not create or destroy the 2 atoms of hydrogen or. 1 atom of oxygen, you just simply break them down and separate them. There is still no evidence of atomic structure. First to figure 2 parts hydrogen and 1 part oxygen gives water. Predicted discovery of 2 new elements beneath al. He knew how to predict their properties as well because of their location on the periodic table based off of the elements that were known around it. Negatively charged ion (electron)(he called it a corpusles) The center tube creates a vacuum, with one side of positive charge and one side of negative charge present. When electrons are shot through, a glow becomes visible in the vacuum.