<p> Chemistry 311</p><p>Chapter 4 + 25: Atomic Structure and Nuclear Chemistry</p><p>Answer these while you read and answer the in-text questions:</p><p>CHAPTER 4 1) What are the four main ideas of Dalton’s Atomic Theory? a) </p><p> b) </p><p> c) </p><p> d) </p><p>2) Which two of Dalton’s tenets are no longer considered true? Explain. a) </p><p> b) </p><p>3) How did J.J. Thomson’s work change the model of the atom?</p><p>4) How did Ernest Rutherford’s work change the model of the atom?</p><p>5) What are the relative sizes and charges of the three subatomic particles? 6) What is the significance of atomic number in identifying atoms?</p><p>7) Complete the table below using your knowledge of atomic and mass numbers. Element Protons Mass # Electrons Atomic # Neutrons Si 15</p><p>1 2</p><p>50 24</p><p>88 38</p><p>8) What makes two isotopes of an element different?</p><p>9) Write isotopic notation for three realistic isotopes of argon.</p><p>10)Use the atomic mass unit information on page 114 to show how the weighted average mass of hydrogen is calculated.</p><p>11)Briefly explain how the periodic table is organized.</p><p>CHAPTER 25 1) How are the terms radioactivity, radiation, and radioactivity related?</p><p>2) Compare and contrast the three types of radiation by completing the table below. Alpha Beta Gamma Composition</p><p>Symbol</p><p>Charge</p><p>Source(s)</p><p>Shielding</p><p>Actual Hazard</p><p>Biological Hazard</p><p>3) How does the term “half-life” relate to nuclear stability?</p><p>4) Solve problems # 7-8 on page 806. 7. 8. </p><p>5) What is transmutation?</p><p>6) Write transmutation reactions for the following processes: a) Alpha decay of uranium-238</p><p> b) Beta decay of aluminum-27</p><p> c) Beta bombardment and alpha decay of silicon-27 7) Compare and contrast nuclear fission and fusion by completing the table below: Fission Fusion General process</p><p>Fuel</p><p>Reaction</p><p>Energy produced</p><p>Controllability</p><p>Sustainability</p><p>Hazards</p><p>8) How is radiation used to benefit society?</p><p>Written Work</p><p>Write answers to the above objectives and answer these questions: p. 122-124 # 38, 42, 50, 52, 65, 67, 68, 72, 76, 78, 83-88 p. 125 # 2-8 even p. 821-824 # 26, 29a, 30a, 31, 33, 34, 35, 38, 43, 51, 53, 57, 67, 70, 71, 77, p. 825 # 2-18 even</p><p>Take a multiple choice test to assess your knowledge. </p>