4.2. Structure of the Atom http://www.ck12.org
Lesson Review Questions
- What id Crookes discover in his cathode ray tube experiments?
- Describe the atom using Thomson’s plum pudding model. Draw a picture of this model.
- How did Millikan set up his oil drop experiment?
- Describe how Roentgen took his first x-ray.
- How did Rutherford’s gold foil experiment contradict the plum pudding model of the atom?
- What is the modern view of the nucleus and its composition?
- Sketch a modern view of the atom indicating the locations of protons, neutrons, and electrons.
- List the properties of electrons, neutrons, and protons.
Further Reading / Supplemental Links
- The History of the Discovery of Radiation and Radioactivity: http://mightylib.mit.edu/Course%20Materials/
22.01/Fall%202001/discovery%20of%20radiation.pdf - Biography of Wilhelm Conrad Rontgen: http://www.nobelprize.org/nobel_prizes/physics/laureates/1901/ro
ntgen-bio.html - Radioactivity: http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/radact.html
- Bievre, P. de, and H. S. Peiser. 1992. ’Atomic weight’: The name, its history, definition, and units. Pure and
Applied Chemistry 64 (10):1535-1543. - Kotz, John, and Heith Purcell. 1991. Chemistry Chemical Reactivity. Orlando, FL: Holt, Rinehart and
Winston. - Partington, J. R. 1989. A Short History of Chemistry. 3 ed. New York: Macmillan. Reissued by Dover
Publications.
Points to Consider
- In this lesson we learned that neutrons and protons in the nucleus have similar mass. How might we measure
the amount of mass contained in different elements?