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Atomic Radiation
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Retakes AFTER SCHOOL and during lunch Thursday or after school… WHOT: Objective: Mathematically model how Alpha and Beta nuclear reactions. Responsibilities: Alpha’s Beta’s and Gamma’s WS due Thursday.
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Particle Symbol Gamma Composition Charge Mass (amu) Shielding (what will stop it) Biological Damage
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Composition Alpha particle = Helium Nucleus (2 protons & 2 neutrons) Charge2+ Mass (amu)4 amu Shielding Biological Damage
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CompositionBeta particle = Electron Charge1- Mass (amu)0 amu Shielding Biological Damage
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CompositionPositron (think of it as a positive electron that lives in the nucleus) Charge1+ Mass (amu)0 amu ShieldingAl-foil, glass, plastic Biological Damage Ingested/Inhaled, some external
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CompositionElectromagnetic Radiation (energy) Charge0 Mass (amu)0 amu Shielding Biological Damage
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Create a question and answer about alpha or beta decay
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Retakes AFTER SCHOOL and during lunch Thursday or after school… WHOT: Objective: Summarize the 3 types of nuclear radiation and their effects on us. Responsibilities: 10.1 questions and Alpha’s Beta’s and Gamma’s WS due Thursday! (also no quiz Friday)
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Green Book pg 292-297. Cornell notes (2 column notes). Answer questions 1-7 on pg 297 on separate sheet of paper. Key Vocab!!! Main Idea
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Create a question and answer about how radiation effects you. Challenge… If you were very keen in your reading, use the word ionization in your whot Q
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Quiz retakes Today during lunch or after school. Tomorrow Last day. Objective: Model how radioactive elements decay over time. Responsibilities: 10.1 Green Book questions due Tomorrow by the end of the day... Vocab: Half Life.
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Half-life – The time it takes for half of a radioactive sample to decay. Step 1: Use pennies to simulate half lives. Step 2: Get graph paper and rubric. Tape into journals. Step 3: Graph and conclusion questions.
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Experimental- its what we record Theoretical- Its what we predict based on a mathematical model or well supported idea.
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Create a question and answer about Half- life. Not the game.
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Physical & Mathematical Representation
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Aluminum-24 will undergo alpha-decay An alpha particle is emitted from the nucleus of the parent isotope The remaining atom is the daughter isotope + 2 charge taken from Al nucleus Charge of new nucleus is 2 less than Al This is the atomic #; Identifies element 4 amu taken from Al nucleus Mass of new nucleus is 4 amu less than Al
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Carbon - 14 will undergo beta-decay –A beta particle is emitted from the nucleus of the parent isotope –A neutron converts to a proton, and remaining atom is the daughter isotope
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Carbon - 11 will undergo beta-decay –A positron is emitted from the nucleus of the parent isotope –A proton converts to a neutron in the nucleus, and the remaining atom is the daughter isotope
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