CEM 141 Study Guide - Comprehensive Final Exam Guide - Chemical Bond, Singapore, Sama Language
Document Summary
Evidence-in thompsons cathode ray tube experiment, particles where emitted from a metal cathode and moved toward a positive anode. They passed through a hole in the anode and then through 2 plates ( + and - charged). The ray of particles de ected toward the + plate and away from the - plate. The amount of de ection could be used to determine the mass of these particles was smaller than that of an atom. Any metal used for cathode emitted these particles. Reasoning: bc particles moved toward + anode and de ected toward + plate, they must be - charged. Atoms are neutral so they cant be atoms. They must be smaller than atoms bc they have a smaller mass than that of an atom. Proves atom is not the smallest thing and that atoms must contain these negative particles along with positive particles to event the charge.
