WA 10_CHE-121-jan18.docx - Name Robert Velat College ID...

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Name: Robert Velat College ID: 0254046 Thomas Edison State University General Chemistry I with Labs (CHE-121) Section no.: Module 10 Semester and year: JUN2018 Written Assignment 10: Nuclear Reactions Answer all assigned questions and problems and show all work. 1. How do nuclear reactions differ from ordinary chemical reactions? (3 points) In a chemical reaction, atoms are rearranged by breaking and forming of chemical bonds. Only electrons are involved in chemical reactions. In nuclear reactions, elements are converted to another element. Protons, neutrons and electrons may be involved. (Reference: Chang 19.1) 2. What is the difference between radioactive decay and nuclear transmutation? (3 points) Radioactive decay is the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation and Nuclear Transmutation is the change undergone by a nucleus as a result of bombardment by neutrons or other particles. (Reference: Chang 19.35) 3. The table below is a summary of different modes of nuclear decay. Fill in the changes in atomic number ( Z ), number of neutrons ( N ), and mass number ( A ) in each case. Use “+” sign for increase, “–“ sign for decrease, and “0” for no change. Provide the symbol for each elementary particle involved in the decay process. (12 points) Decay Mode Particle Symbol Change in: Change in: Change in: Z N A Alpha decay α -2 -2 -4 Beta decay β +1 -1 0 Positron decay + ¿ β ¿ -1 +1 0 Electron capture n -1 +1 0 1 Copyright © 2017 by Thomas Edison State University . All rights reserved.
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(Reference: Chang 19.6)
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