J.J.+Thomson

J.J. Thomson [] [] [] Explain the importance of Thomson’s experimentation with the Cathode Ray Tube. by this experiment he was able to discover what atoms were made up of.

The importance of the Cathode Ray Tube, was that JJ Thompson discovered minuscule atoms, & realized that they are made up of all matter
Summarize his model of the atom.

In Thompson’s model of the atom, atoms are made of negative charged particles surrounded by a positively charge field, which gives the atom a neutral charge.

Thomson’s model changed our view of the atom. Compare and contrast his model to Dalton’s model. What new knowledge did we gain? - **Dalton found out that atoms were neutral, but Thompson later found out that there was a balance of negative and positive atoms** What was wrong with Dalton’s model? Did any of Dalton’s ideas continue to be valid? Thomson's model was more vague, and dalton's model had many more detials and specifics. The new knowledge that we gained was that the atom has more to it then we thought. In dalton's model, he made the mistake in assuming that the simplest compound of two elements must be binary, formed from atoms of each element in a 1:1 ratio, and his system of atomic weights was not very accurate - he gave oxygen an atomic weight of seven instead of eight. Yes his knowledge was invalid.