J.J.+Thomson

J.J. Thomson [] [] [] __ Explain the importance of Thompson's experimentation with the Cathode Ray Tube. __ Thomson’s experimentation with The Cathode Ray tube helped him discover that the cathode rays were actually streams of particles much smaller than atoms, and that they were in fact smaller pieces of atoms.

Experimentation with the Cathode Ray tube made him discover how the rays were streams of particles, which were called corpuscles which possibly made up matter.

Corpuscles were arranged non-randomly in rotating rings.

Thomson’s model changed our view of the atom. Compare and contrast his model to Dalton’s model. What new knowledge did we gain? What was wrong with Dalton’s model? Did any of Dalton’s ideas continue to be valid?

Dalton's Atom VS J.J. Thompson's Atom

__Summarize his model of the atom.__ Thomson's model of the atom (also known as the Plum Pudding Model) was composed of electrons, surrounded by a "soup" of positive charge to balance the electrons negative charges.

Thomson's Model Atom