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‘A’ Chemistry Chapter 8 Study Guide

Define:
1. electrode                             12. coulomb
2. anode                                  13. radiation
3. cathode                               14. radioactivity
4. cathode ray tube                  15. alpha particle
5. fluorescent                           16. beta particle
6. electron                               17. gamma ray
7. proton                                 18. nucleus
8. plum pudding model             19. neutron
9. ion                                       20. atomic number
10. cation                                 21. mass number
11. anion                                  22. isotope

Questions:
1. Why do scientists develop models?
2. List and explain what Dalton proposed for the atomic theory.
3. Explain Crookes experiment with cathode ray tubes.
4. What did Thomson measure?
5. In Thomson’s experiment, how was the deflection of particles influenced by mass, velocity, electrical charge, and the strength of the magnet?
6. How did Thomson discover the electron?
7. What led to the idea of positive protons?
8. Describe Thomson’s plum pudding model.
9. How are ions formed?
10. What is Robert Millikan famous for?
11. Compare the masses of protons and electrons.
12. Describe how Becquerel discovered radioactivity.
13. Describe the contributions of Marie and Pierre Curie.
14. List and compare the three types of radiation.
15. Explain Rutherford’s experiment and why it was so significant.
16. What is Chadwick given credit for?
17. Copy Table 8-1 on p.277.
18. How is the atomic mass of an element determined?

Problems:
p.282 13,14,15
Chapter Review: 1,2,3,4,5,6,13,14,15,16,17,18,31,32,33,34,35,36,37,38,39,41,42,43,44,45,46,47,48,49