NUCLEAR DAY 2

Christian B, Elijah, Breonna BOARD 1 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now Alexia Denice eddie Shomari Ms. King desk justis, damien Torien Steven Terronda Kenneth Kanisha Kendjy Sapphira Diamond Cabinets rhyannon, chiarrah Isaiah Jordan Darius Aaron Kiana Donovan Taiya Davon B Jamya, Marisa Matthew, Destiney Black desks Christian B, Elijah, Breonna Ronica

2 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now BOARD 2 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now Kendall Semaj Perryon Jakeria T Courtney Carmani Ty Ms. King desk Diane Donquavis Annamaria charles Christine V , deondre Cabinets Lionel, kendall Asia Christie Isaiah desean Malik Destini alexandria Jakeria W, akiara Black desks Tyquan tareek

4 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now BOARD 4 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now Ivory Tashauna calvin Ms. King desk Amari Jordan brooklyn Jalen Garry Tylauna devin Stephaine, cathie Cabinets Gammoni, jamal Dre Taliyah lakayla Sammiyah Jayla Kenosha terrell Raheem, brittany Black desks Joslyn Sanquan

6 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now BOARD 6 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now jov’on xavier Kyceem nick Ms. King desk darius, joshua jaquan chaiashia Tyrah kenya christian p kenneth Justen F derreonte Cabinets Sarah, ryan Jasmine D izshel crystal stephen Cornel Jasmine H emely le Gabriel Jamileth khai zachary Black desks None

7 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now BOARD 7 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now Erika Jamauri Raquan tiffany Ms. King desk Diane , Rayvn M Khateeb Russel Shakira Raven s Nelson Alexis taylor Lakeiorioa Cabinets Gabriella, destiny Michelle Caitlyn Carrie faith Zakera ah’drevious Tyler shantrell Regina briana keniya dawud Cayla s Black desks Jackquese

8 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now BOARD 8 Bell Ringer for points! FIND YOUR NEW SEAT Start Do Now Alvin Nick r Essence Antonio Ms. King desk Anbriana, sa’koyia Chris F Kyree ralph Cabinets Hayley Camille Shavonna jada Candie, johneda Ahmari Kiyem noemi jakyyah Diante Richard Colay Cameron P EMPTY Black desks Jeannie, Courtney D

Do now 1. REACTION CHEMICAL NUCLEAR Cancer treatment Digesting food Burning fossil fuels Radioactive dating The sun generating heat and light Fusion or Fission: Hydrogen nuclei are fused in the Sun to make helium atoms. Fusion or Fission: Radium-226 decays to radon-222. Strong nuclear forces affect which part of the atom? Which of the following causes radioactivity? Strong nuclear Gravity Weak force Electromagnetic forces

& Daily Expectations Agenda Go over chemical/nuclear Go over fusion/fission Go over 4 forces Learn about radioactive decay SHOULD BE WORKING ON-TOPIC NO HEADS DOWN

4 forces (strong  weak) Strong nuclear force : holds middle of atom (protons/neutrons) Electromagnetic force : holds electrons Weak : causes some forms of radioactivity; atomic decay Gravity : causes all things with mass to attract

Nuclear vs chemical reactions Nuclear reaction Chemical reaction Results in the fusion (combining) or fission (splitting) Results in the atoms breaking or forming bonds

What is RADIOACTIVITY?? Radioactive decay occurs in unstable atomic nuclei –due to an excess of either protons or neutrons. This unstable nucleus will then release energy or a particle known as radiation

Effects on the Human Body Measured in Sieverts(Sv) Comparing Exposures Background Radiation Chances of Death Based on Exposure Level Symptoms Yes! High levels will cause extreme mutations and disfigurement!

Types Radioactivity High energy photon Gamma Radiation

42He For Your Information MASS ATOMIC NUMBER ****this determines what element it is – use the periodic table!

Alpha decay Example : 23892U → 42He + 23490Th If an atom releases an alpha particle, it will be positively charged mass number decreases by four and atomic number decreases by two units. Example : 23892U → 42He + 23490Th Very damaging! Paper exposed to constant alpha radiation would break down.

Beta decay Example : 23892U → 42He + 23490Th If an atom releases an beta particle, it will be negatively charged mass number stays the same and atomic number increases by one unit. Example : 23892U → 42He + 23490Th It takes a small aluminum plate to stop most beta particles.

Gamma decay Example : 23892U → 42He + 23490Th If an atom releases a gamma particle, it will have no charge mass number stays the same and atomic number stays the same. Example : 23892U → 42He + 23490Th This radiation has no charge, and can penetrate most matter easily, requiring lead bricks for shielding.

Penetrating Power

Videos! Title: MOST RADIOACTIVE PLACES ON EARTH What have you learned? https://www.youtube.com/watch?v=WMXhk_SATTc https://www.youtube.com/watch?v=TRL7o2kPqw0 Title: MOST RADIOACTIVE PLACES ON EARTH What have you learned? 2. What would like to know about?

We do Put alpha or beta decay for each transformation:

Partner practice expectations C – on topic; no disturbances H- ask your partner then me A- partner practice M- none P- make sure you are working S- success with decay problems!