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Nuclear Chemistry

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**Nuclear Chemistry Objectives**

Students will be able to identify what radioisotopes are and why they undergo radioactivity. Students will be able to compare properties of nuclear reactions with chemical reactions. Students will demonstrate understanding of radioactive decay through application and graphing. Students will assess the application of nuclear chemistry as a continual alternative resource of energy for developed countries. Students will understand and classify nuclear reactions by the types of radiation produced.

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**Nuclear Chemistry Objectives**

Students will be able to identify what radioisotopes are and why they undergo radioactive decay. Students will demonstrate understanding of radioactive decay through applications and graphing. Students will understand and classify nuclear reactions by the types of radiation produced.

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**Atomic Structure: 3.12 Due: Band of Stability Worksheet (part A)**

Infinite Campus Check-up Assignment Objectives: I can distinguish between atomic models. I can use the band of stability graph to understand what a radioisotope is and to classify atoms as radioisotopes. I can demonstrate understanding of radioactive decay through applications and graphing.

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Bell Ringer: 3.12 1. What problem did scientists have with Rutherford’s Nuclear Model below? Explain your answer. 2. On the Nuclear Band of Stability Worksheet, complete part b. (plotting) and questions 1-4.

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**Bell Ringer: Evolution of Atom**

Who is given credit for the earliest model of the because he applied the scientific method? What did Thomson’s model contribute to the atom? What did Rutherford’s model contribute to the atom? What did Bohr’s model contribute to the atom? What did the Quantum Mechanical model contribute to the atom?

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**Types of electron paths around nucleus**

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**Atomic Models Rutherford’s Dalton’s Atomic Model**

Nuclear Model Dalton’s Atomic Model Thomson’s Plum Pudding Model Bohr’s Planetary Model Schrodinger’s Atomic Model (current model)

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Bell Ringer: 3.12 1. What problem did scientists have with Rutherford’s Nuclear Model below? Explain your answer. 2. On the Nuclear Band of Stability Worksheet, complete part b. (plotting) and questions 1-4.

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**Subatomic Particle: Neutron**

What keeps the protons within the nucleus ? (Like particles repel each other) Neutrons stabilize the nucleus by separating the protons from one antoher. James Chadwick discovers that the nucleus also has neutral particles present. He called them neutrons.

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Bell Ringer: 3.12 1. What problem did scientists have with Rutherford’s Nuclear Model below? Explain your answer. 2. On the Nuclear Band of Stability Worksheet, complete part b. (plotting) and questions 1-4.

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**Atomic Structure: 3.13 Due:**

Infinite Campus Check-up Assignment (over due) Complete Nuclear Band of Stability Graph Radioactivity Article Objectives: Atomic Structure and Theory Quiz I can use the band of stability graph to understand what a radioisotope is and to classify atoms as radioisotopes. I can demonstrate understanding of radioactive decay through applications and graphing.

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**Nuclear Band of Stability Worksheet**

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Radioisotopes Use your band of stability graph to answer the following questions. Analysis Questions: 1. What is a radioisotope? 2. What subatomic particles determine if an atom is a radioisotope? 3. True or False: Most atoms have a stable nucleus if it has an equal number of protons and neutrons. Explain your answer using your graph.

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**Nuclear Band of Stability**

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**Nuclear Band of Stability**

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**Radioactive Decay Also called: radioactivity; nuclear reactions**

A reaction that occurs within the nucleus of a radioisotope in order to stabilize it. Spontaneous Reactions Reaction rates (speed of reactions) remain constant for radioisotopes despite changes in temperature, pressure, or addition of catalyst.

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**Atomic Structure: 3.14 Due: Objectives:**

Infinite Campus Check-up Assignment (over due) Complete Nuclear Band of Stability Graph(over due) Radioactivity Article (over due) Objectives: I can demonstrate understanding of radioactive decay through modeling, graphing, and word problems.

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**Radioactive Decay: Half-Life**

What is half-life? Why is the half-life of a radioisotope very important to many disciplines of science?

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**Radioactive Decay: Half-Life**

Half-Life: The time it takes for half of a radioisotope sample (parent isotope) to decay into a more stable isotope (daughter isotope).

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Radioactive Decay Lab Purpose: Simulate and graph the radioactive decay of an artificial radioisotope, M&Mium. Complete the pre-lab questions and hypothesis. thefoxisblack.com usd314.k12.ks.us

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**Atomic Structure: 3.14 Homework:**

Complete M&Mium lab and radioactive decay problems.

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**Atomic Structure: 3.17 Due: Radioactive Decay (M&Mium) Lab**

Radioisotopes and Radioactive Decay Packet Objectives: I can demonstrate understanding of radioactive decay through modeling, graphing, and word problems. I can distinguish between the three types of nuclear radiation. I can classify and predict the products of nuclear reactions.

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Radioactive Decay Lab Purpose: Simulate and graph the radioactive decay of an artificial radioisotope, M&Mium. Complete the pre-lab questions and hypothesis. thefoxisblack.com usd314.k12.ks.us

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**Radioactive Decay Lab: Data Table**

Number of Half-Lives Total Time (seconds) # of M&Miums (parent isotope) Daughter Isotope (decayed) 1 2 3 4 5 6 7

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**Radioactive Decay Graph**

astronomy.nmsu.edu

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**Radioactive Decay Problems**

a. A patient is given a 100 mg sample of I How much of the isotope will remain in the body after 16 days? The half-life of I-131 isotopes is 8 days. b. How many days will pass for a 1.0g sample of I-131 isotope to decay to 0.25g?

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Nuclear Radiation 1. According to the article you read, what is nuclear radiation? Who discovered nuclear radiation? How have humans used nuclear radiation?

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**Atomic Structure: 3.14 Due: Objectives:**

Infinite Campus Check-up Assignment (over due) Complete Nuclear Band of Stability Graph(over due) Radioactivity Article (over due) Objectives: I can demonstrate understanding of radioactive decay through modeling, graphing, and word problems.

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**Atomic Structure: 3.19 Due: Radioactive Decay (M&Mium) Lab**

Radioisotopes and Radioactive Decay Packet Objectives: I can demonstrate understanding of radioactive decay through modeling, graphing, and word problems. I can distinguish between the three types of nuclear radiation. I can classify and predict the products of nuclear reactions.

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**Nuclear Radiation Nuclear Radiation:**

Matter and large amounts of energy produced during a nuclear reaction. Three main types of nuclear radiation: Alpha radiation (α ) Beta radiation (β) Gamma radiation (ϒ)

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Nuclear Radiation Types of radiation can be classified by type of shielding. paper (alpha particle) wood (beta particle) (gamma particle) concrete or lead

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**Types of Nuclear Radiation**

Types of radiation can be classified by their charges.

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**Alpha (α ) Radiation change in mass number: change in atomic number:**

parent decays α daughter isotope isotope particle (stable) (unstable) (He nucleus) change in mass number: change in atomic number:

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**Beta (β) Radiation β particle change in mass number:**

change in atomic number: transmutation occur? 35

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**Gamma (ϒ) Radiation +ϒ parent decays α + daughter isotope + ϒ**

isotope particle (stable) (unstable) (He nucleus) change in mass number: change in atomic number: transmutation occur?

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**Transmutation Transmutation:**

An element is converted to a new element during radioactive decay. What must happen in the nucleus for a transmutation to occur? Does a transmutation occur during alpha, beta, and gamma reactions?

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**Atomic Structure: 3.20 Infinite Campus Update:**

Evolution of the Atom packet (10pts.) Kandium Lab(27pts.) Band of Stability Worksheet (10pts.) Radioactive Decay Lab (23pts.) Objectives: I can demonstrate understanding of radioactive decay through modeling, graphing, and calculations. I can distinguish between the three types of nuclear radiation. I can classify and predict the products of nuclear reactions.

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**Nuclear Reaction Types**

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**Atomic Structure: 3.24 Due: Nuclear Decay Worksheet Objectives:**

I can classify and predict the products of nuclear reactions. I can demonstrate understanding of radioactive decay through modeling, graphing, and calculations. I can distinguish between the three types of nuclear radiation. Review atomic structure/theory and nuclear reactions study guide via gallery walk. Homework: Review Study Guide-Test tomorrow.

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**Nuclear Reaction Worksheet**

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**Nuclear Band of Stability**

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**Atomic Structure: 3.20 Due: Nuclear Decay Worksheet Objectives:**

I can classify and predict the products of nuclear reactions. I can demonstrate understanding of radioactive decay through modeling, graphing, and calculations. I can distinguish between the three types of nuclear radiation. Review atomic structure/theory and nuclear reactions study guide via gallery walk.

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**Atomic Structure and Nuclear Reaction Study Guides**

Review concepts via gallery walk.

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**Radioactivity Decay Review Wksht. Key**

4a. I b. C-14 c. U-238 No, only 75% of parent isotope decays, still 25% remaining. 1 million radioactive atoms a mg of I-131 remaining b. 24 days 8 a. 20% b. about 85 grams c. about 83 days d. about 28 days B.C.

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**Atomic Structure: 3.20 Due: Nuclear Decay Worksheet Objectives:**

I can classify and predict the products of nuclear reactions. I can demonstrate understanding of radioactive decay through modeling, graphing, and calculations. I can distinguish between the three types of nuclear radiation. Review atomic structure/theory and nuclear reactions study guide via gallery walk.

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**Nuclear Chemistry Quiz-Review**

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Transmutation Transmutation: An element is converted to a new element during radioactive decay. How else could you define transmutation? What must happen in the nucleus for a transmutation to occur? Does a transmutation occur when alpha, beta, or gamma radiation is produced?

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Transmutation Transmutation: An element is converted to a new element during radioactive decay. A parent isotope is converted to daughter isotope An unstable atom converted to a more stable atom. Atomic number changes during radioactive decay parent decays α daughter isotope isotope particle (stable) (unstable) (He nucleus)

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**Nuclear Chemistry Objective**

Students can explain the difference between fission and fusion. Students can analyze the benefits and risks of nuclear energy

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**Transmutation Transmutation occurs during: 1. Radioactive Decay**

2. Bombarding an atom’s nucleus with particles. -can occur naturally or artificially -fission and fusion nuclear reactions

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Fission vs. Fusion Fission Fusion Similarities

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Nuclear Fission Fission is the splitting of a heavy nucleus by bombarding it with neutrons. cikguwong.blogspot.com chm.bris.ac.uk

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**Nuclear Fission Application**

Generates electricity where only steam is released into the environment. english-online.at chm.bris.ac.uk

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**Nuclear Fission Problem**

Nuclear Waste: Spent fuel rods must be disposed of properly. (pg. 812 in text) On-site or off-site holding tanks called pools. coto2.wordpress.com

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**Nuclear Fusion Nuclear Fusion – Small radioisotope nuclei combine.**

mrbarlow.wordpress.com mrbarlow.wordpress.com

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**Nuclear Fusion Produces immense amount of energy.**

Does not produce nuclear waste Applications? Not yet. Requires immense amount of energy. Example: sun (40,000,000 0C) scienceknowledge.org

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**Nuclear Chemistry Objectives**

Students will assess the application of nuclear chemistry as a continual alternative resource of energy for developed countries. Assessment by: -reading and annotating literature that addresses pros and cons of nuclear energy. Debating with peers why we should or should not depend on nuclear energy. Formulating an opinion based on facts as to why the U.S. should continue to support the research and development of nuclear energy. (ORQ format)

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Exit Slip 1. What is the difference between fission and fusion and give an example of each? 2. Should the United States continue the research, development, and application of nuclear energy through nuclear fission?

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**Nuclear Chemistry Objective**

I can analyze the benefits and risks of nuclear energy. (SC-H-ET-S-2)

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Nuclear Energy Debate NUCLEAR REACTOR breakthrougheurope.org

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earth-policy.org

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firstlab.webege.com

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Nuclear Energy

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**Chernobyl,Ukraine Nuclear Disaster Effects**

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**Fukushima, Japan Disaster Effects**

novinite.com guardian.co.uk nucleaire11.wordpress.com business.financialpost.com uncannyterrain.com

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**Gallery Walk: Nuclear Energy Pros and Cons**

Each debate group record on chart paper important pros and cons you addressed today. Walk around and observe what other debate groups discussed.

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**Exit Slip: Nuclear Energy**

Did today’s nuclear energy debate strengthen or weaken your view on this issue? What is your view on this issue now: Should the U.S. continue to support the research, development, and application of nuclear energy? *Make sure to validate your view with several supporting facts. *

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