WASTE MANAGEMENT TSC Scored Activity 2. Date submitted:... Student identification. Name:... Address:... Tel.: Mark:...

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1 WASTE MANAGEMENT TSC Scored Activity 2 Date submitted:... Student identification Name:... Address: Tel.: Mark:... /100

2 TSC WASTE MANAGEMENT This scored activity was produced by the Société de formation à distance des commissions scolaires du Québec (SOFAD). Production Team Project coordinator for the English version: Project coordinator for the French version: Author: Illustrations: Content revision: Translation: Layout and computer graphics: Proofreading: Jean-Simon Labrecque Alain Pednault (SOFAD) Judith Sévigny Marc Tellier Gilles St-Louis Claudia de Fulviis Daniel Rémy (I. D. Graphique inc.) Claudia de Fulviis Alain Pednault (SOFAD) Despite the following statement, SOFAD authorizes adult education centres using the related learning guide to reproduce this scored activity. This work is financed by the Ministère de l Éducation, du Loisir et du Sport du Québec. Part of this financing comes from the Canada-Quebec bilateral agreement related to minority language education and second languages instruction. SOFAD, 2013 All rights for translation and adaptation, in whole or in part, are reserved for all countries. Any reproduction by mechanical or electronic means, including micro-reproduction, is prohibited without the written permission of a duly authorized representative of the Société de formation à distance des commissions scolaires du Québec (SOFAD). SOFAD

3 SCORED ACTIVITY 2 Most education centres require that students obtain an average mark of 60% or higher in order to write the official examination. Scored Activity 2 covers the subject matter in learning sequences 3 and 4 of the Waste Management learning guide. Once you have completed this activity, send it to your tutor together with any related documents. SOFAD 3

4 TSC WASTE MANAGEMENT Instructions Fill in the Identification section. Carefully read each question before answering it. Write your answers in the appropriate spaces and give complete solutions, as applicable. The weighting for each question is indicated to the right of each section of the scored activity. You may use a calculator. 4 SOFAD

5 SCORED ACTIVITY 2 Scored Activity 2 /100 points Submit After learning sequences 3 and 4. Essential knowledge covered Groups (families) and periods, simplified atomic model, atomic number, relative atomic mass, periodicity of the properties, Lewis notation, isotopes, radioactive isotopes, nuclear stability, fission and fusion, radioactivity A. Explicit Evaluation of Knowledge 1. Multiple-choice questions /15 points 1. What name is given to the columns and rows in the periodic table? a) Periods and families b) Groups and families c) Groups and periods d) Periods and shells 2. True or false? If we have a 25-g sample of fluorine-18 at 6 pm, by the following day at the same time less than 5 mg will remain. The half-life of fluorine-18 is 1.8 h. a) True b) False 3. What is the electron configuration of chlorine? a) 2e, 7e b) 2e, 8e, 7e c) 8e, 8e, 7e d) 2e, 8e, 8e, 7e 4. To what mass, expressed in kilograms, does the atomic mass unit (u) correspond? a) kg b) kg c) kg d) kg SOFAD 5

6 TSC WASTE MANAGEMENT 5. Which of the following drawings is an accurate representation of the simplified atomic model? A) C) Electron Proton B) D) Neutron 6. Which of the following Lewis dot diagrams is correct? a) B b) Mg c) F: d) C 7. Indicate whether the following statement is true: "Halogens are very reactive elements that try to gain an electron by binding to metals." a) Yes b) No 8. What do we get when we round the relative atomic mass of an element to the nearest unit? a) Its mass number b) Its atomic number c) Its mass in kilograms d) Its number of electrons 9. What are beta (b) particles? a) Helium-4 nuclei b) Positrons c) Neutrons d) Electrons 6 SOFAD

7 SCORED ACTIVITY To what does the number of a row in the periodic table correspond? a) To the number of valence electrons b) To the number of electron shells c) To the number of protons in the nucleus d) To the number of electrons in the first electron shell 11. What are the subatomic particles that move in precise orbits around the nucleus? a) Electrons b) Neutrons c) Protons d) Neutrinos 12. What type of fissile material is commonly used in CANDU reactors? a) Plutonium b) Enriched uranium c) Natural uranium d) Americium 13. Determine which two are isotopes of the same element X X X X Select the best answer below: a) 1 and 2 b) 1 and 3 c) 1 and 4 d) 3 and What is the nuclear transformation that fuels the Sun? a) Fission b) Transmutation c) Alpha decay d) Fusion 15. Is the following statement true or false? "The human health effects of acute exposure to radiation depend on the type of radiation concerned and the sensitivity of the exposed organs." a) True b) False SOFAD 7

8 TSC WASTE MANAGEMENT 2. Short-answer questions /10 points 16. Explain why helium is found in group 18 (VIIIA) although it has only 2 valence electrons like the elements in group 2 (IIA). 17. Complete the table below which relates to the two natural isotopes of chlorine. Isotope Mass number Number of protons Number of electrons Number of neutrons Cl Cl 18. The functioning of an ionizing smoke detector is based on the decay of americium-241 (atomic number: 95) into neptunium- 237 (atomic number: 93). What type of radiation is emitted during this transmutation? 19. What is the atomic mass of aluminum, expressed in atomic mass units and in kilograms? The atomic mass unit is equal to kg. 20. What family is formed of elements comprising 2 valence electrons? 8 SOFAD

9 SCORED ACTIVITY How does the relative atomic mass of elements vary across a period and in a group within the periodic table? 22. What discovery made it possible to explain the cohesion of the atomic nucleus in spite of the mutually repulsive force of the protons? 23. How can the number of protons in the nucleus of an atom be determined? 24. What enables you to represent an atom with a Lewis dot diagram? 25. Explain what a chain reaction is. What condition must be satisfied in order to sustain this reaction? SOFAD 9

10 TSC WASTE MANAGEMENT B. Evaluation Sequence: Critical Issue Related to Waste Goal To apply problem-solving skills and knowledge of the periodic table and nuclear transformations, in order to propose a long-term storage solution for waste from a nuclear power plant The main challenge that needs to be addressed in connection with a nuclear power plant, aside from the risks associated with the operation of such a plant, is undoubtedly how to manage the waste from the facility. The site currently used to store waste from the plant will reach its full capacity in the next few years. A new solution must therefore be found very soon. As a nuclear safety specialist, you have been asked to examine this issue. Your task You will propose a procedure for storing waste from a nuclear power plant. To this end, you must: identify the types of waste produced by the plant; determine the impacts associated with these wastes; propose a long-term storage method for the waste. Identifying the types of waste /20 points Before thinking about how to dispose of waste from the nuclear power plant, it is necessary to determine what types of waste are concerned. a) What are the wastes generated by such a plant called and what do these wastes consist of? 10 SOFAD

11 SCORED ACTIVITY 2 b) From what process(es) do these wastes result? The impacts /20 points Now that you have identified the wastes generated by the nuclear power plant, you must determine what efffects such wastes could have on the environment (flora and fauna) and on human health, if they are not stored properly. a) It is the "emanations" that make the wastes from a nuclear power plant so dangerous. What exactly do these "emanations" consist of? b) What are the potential effects on human health? SOFAD 11

12 TSC WASTE MANAGEMENT c) What are the potential effects on flora and fauna? A storage method /35 points Now that you are familiar with the types of waste produced by the plant and their potential impacts on human health and the environment, you must draft a text (in paragraph form) in which you propose a safe method for the long-term storage of the waste. You must determine the following, among other issues: the characteristics of the containment vessel that block radiation (types of material, thickness, etc.); the location and key characteristics of the new storage site; the service life of the site and the reasons for this time frame. 12 SOFAD

13 SCORED ACTIVITY 2 Assignment for Activity 4.3 "Applications of Nuclear Technology" Draft the news brief asked for at the end of Activity 4.3 on page 197. SOFAD 13

14 TSC WASTE MANAGEMENT 14 SOFAD

15 SCORED ACTIVITY 2 Review of competencies What is a competency? A competency is defined as the development of a set of skills, knowledge, perceptions and attitudes needed to be able to effectively deal with relatively complex situations. In this course, you will develop three types of competencies that you will be able to apply not only in this subject, but also in other academic subjects as well as in your everyday life. They are: Seeks answers or solutions to scientific or technical problems Makes the most of his/her knowledge of science and technology. Communicates using the languages of science and technology. The third competency is not evaluated separately, but as part of the other two competencies. With regard to learning sequences 3 and 4, which you have completed, indicate whether you were able to develop the following key features of the competencies. Activity Competency Key features developed Yes No In part 3.4 The Periodic Properties of Elements Seeks answers or solutions I learned about the assignment to be done in this activity. I arranged the element cards according to the criteria specified. I drew graphs of the trends in certain properties of the elements. I analyzed the table and graphs in order to identify the trends in certain properties of the elements in the periodic table. I formulated my findings related to the trends in certain properties of the elements in the periodic table. I provided an explanation about the meaning of the adjective "periodic" used in regard to the table of elements. SOFAD 15

16 TSC WASTE MANAGEMENT Activity Competency Key features developed Yes No In part 4.3 Applications of Nuclear Technology Makes the most of his/her knowledge I learned about the assignment to be done in this activity. I learned about various applications of nuclear technology. I associated each application with the nuclear transformation being harnessed. I drafted a news brief explaining the functioning of an application of nuclear technology and describing the benefits. Student's questions or comments Tutor's remarks September 2013