Bellwork Homework Quiz Fill in the blanks: 1. Alpha decay radiation emits an alpha particle that is also called helium. This element consists of 2 protons and 2 neutrons. The daughter element produced has 2 less protons and its mass is reduced by 4. Ex. Chlorine-36  Phosphorus-32 + Helium-4 2. Beta decay radiation emits an electron with a mass of 0 and a atomic (proton) number of -1. A neutron is changed into a proton in the process. The daughter element produced has 1 more proton and the same mass. Ex. Radium-222  Actinium electron-0

Have out… Bellwork sheet Homework (alpha, beta #16)

Announcements Test corrections due Mon/Tue EduCreation app – whiteboards

Agenda 1. Bellwork homework quiz (20 minutes) 2. Introduce gamma decay (5 minutes) 3. Finish gamma problems (8 minutes) 4. Small group tutoring (30 minutes) 5. Check for understanding (5 minutes) 6. Introduce new topic – fission and fusion

Gamma Decay Gamma decay is the last Form of decay we will talk about where unstable atoms emit waves in an attempt to become more stable.

No simulation  Gamma Decay: In your notes: Describe gamma decay. What is given off and how do you determine the stable element produced? 1. Give an example: Write the gamma decay of Uranium – 235. Uranium-235  _____________ + _______________ U  _________ + _________

8 minutes Finish the gamma section on the homework, #17, and 18. When done, prepare homework: Half-life table problems (4) Alpha, beta, gamma worksheet Honors: Half-life equation problems

Small Group Review Set Up: 1 tutor for each table of 7 students Each student has a problem set consisting of 2 problems Tutors: Help each student with their problem set Students: Solve each problem and be prepared to present to the group You will have 10 minutes to complete your problem set and each student will have 2 minutes to present their problems to the group using white boards (15 min total). Tutors will correct students when needed RESPECTFULLY.

How are we? Thumb up, down, sideways Why elements have half lives How to set up half-life problems How each type of radioactive decay works (alpha, beta, gamma) How to write equations for each type of decay

Exit Slip Why do elements decay according to their half life? 2. What is a half life? The WHY:The WHAT: Nuclear strong force - Radioactive elements Radioactivity - Half Radiation - Decay Unstable - P+, n 0, mass Isotopes

Fission and Fusion Basics Fission: the splitting of one atoms nucleus into smaller parts to generate energy in attempt to power specific processes. Fusion: the combination of the nuclei of two atoms into one atom to generate energy in attempt ot power specific processes.

Efficiency An efficient process yields: Energy gained > energy put in Fission Requires less energy than fusion but produces less energy output and we are running out of Uranium so it is not necessarily renewable Fusion Requires 10x the energy in the core of the sun but can potentially produce more NET energy (5x more than fission) Safe, abundant and limitless We do not have enough tritium but we can breed it with sea water (deuterium) and fission of Lithium to make tritium

Research Project In groups of 3 Due Mon/Tue Research (written) Each group member must have information on a portion of the project Due Thu/Fri Presentation ready + citations

Groups – Period 2 Group 1:Group 2: Darissa, Armida, RicardoCristal, Alex, Jose F. Group 3: Group 4: Andy, Lennesha, HeneydaMiguel, Adriana, Ashley Group 5: Group 6: Efrain, Sandra, HenryGregory, Ruth, Margarita Group 7:Group 8: Pedro, Ariel, CristoHeriberto, Airam, Adam Group 9: Group 10: Siul, Ricky, AlondraDaniel, Joefran

Groups Period 3 Group 1:Group 2: Kathy, Angie, ArlenChristina, Esmeralda A, Michael Group 3: Group 4: Abner, Mariajose, ArleneOscar, Jason, Cynthia Group 5:Group 6: Daniel, Jessica, JosueRene, Fatima, Sheelly Group 7:Group 8: Aleida, Amber, LuisangelLuis H, Leslie G, Jocelyne Group 9: Group 10: Genesis, Juan, Leslie P.Yasmin, Christian, Esmeralda R. Group 11: Bryant, Delia, Rosa

Groups Period 4 Group 1:Group 2: Emilio, Jeanette, AzzelBrenda, Jose A, Natalie G. Group 3: Group 4: Yeni, April, LeoGabby, Joana, Silvino, Alejandra Group 5:Group 6: Raquel, Malachi, JenniferAimee, Nathalie, David Group 7:Group 8: Andrew, Jasson, XochilJonathan, Deija, Yulisa Group 9: Group 10: Davion, Genesis, JoshuaJaqueline, Sonya, Rene

Groups Period 5 Group 1:Group 2: Aaron, Samantha, LauraRachel, Jessica, Alex Group 3: Group 4: Jasmine A, Khalil, YansiFrank, Sarah, Elba Group 5:Group 6: Michael, Jaime, CierraAlaina, Shirely, Ivan Group 7:Group 8: Claudia, Celeste, JeffAna, Jasmine G, Luis A. Group 9: Gabby, Janet, Alan, Yaquelin

Groups Period 6 Group 1:Group 2: Thania, Steven, ZulmaEdward, Reino, Daniella Group 3: Group 4: Olga, Kinshasa, James Melani, Nataly, Alex R. Group 5:Group 6: Christian, Jasmin, VictorCherie, Frank, Jesse

Today… You have the rest of the period today to research for your project and take notes Mon/Tue – research is due and should be DONE so divide the remaining work evenly among group members

Role Cards EVERYONE: Quality Control Researching - Assess group Contributing ideasmembers ideas, what is being researched and written down Facilitator: Spokesperson Assign individual roles (what to research, who is writing etc). Keep group on task - Only one who talks to the teacher, ask questions to group members, stimulate good ideas

To come… Rest of day Mon/Tue – PowerPoint work Presentations: Thu/Fri

Exit Slip Describe the difference between fission and fusion. 2. What is due on Mon/Tue for your project?