RADIOCATIVITY (TOPIC)

ACTIVITIES Activity 1: Problem Solving Solve the following: 1. What nuclide is formed when :Pb undergoes alpha decay? 2. What nuclide is produced when Be undergoes electron capture? 3. "Cu undergoes beta-minus decay. What daughter nuclide is formed? 4. What nuclide is formed when {ga undergoes beta-plus decay? 5. What nuclide is produced when %;Wp undergoes electron capture?VALUING Activity 2: Cite some biological effects of radioactive decay. 2 Biological Effects of Radioactive Decay 5w POSTTEST IChoose the letter of the correct answer. 1. Which type of radioactive decay does not exhibit transmutation? A. Alpha decay C. electron capture E. Beta decay D. gamma decay 2. What type of nuclear decay releases energy but not a particle? 3.. alpha decay C. gamma decay E. beta decay D. electron decay 3. The structure of the alpha particle is the same as PL. lithium atom C. hydrogen atom E. neon atom D. helium atom 4. Which of these types of nuclear radiation has the greatest penetrating power? A. alpha (3. beta B. gamma D. neutron 5. The half-life of a radioactive substance is 2.5 minutes. What fraction of the original radioactive substance remains after 10 minutes? A. 1/2 B. 1/4 C. 1/8 D. 1/16