Warm up 10-17-17 Write an equation for the alpha decay of polonium-214 Write an equation for the beta decay of thallium-203 2. Pl 81protons Agenda -New Seats -Turn in HW decay WS -Notes unit 3-6 -Lab Sterno heat in a can Homework Oct 23 – Test unit 3 Oct 23 – Notebook check Oct 23 – Online Homework Oct 25 – Extra Credit due

Unit 3-6 Nuclear Fusion vs. Fission

Explaining Mass Defect E=mc2 says that mass can be converted into energy when the nucleus is formed Sun is about 109 times the diameter of Earth, and 1.3 million planet Earths can fit inside the Sun

Nuclear Fusion When multiple nuclei smash into each other forming a larger nucleus. Hydrogen is the fuel for H-bomb and our sun https://www.youtube.com/watch?v=0DsKaphCrFA - birth of otta octavius http://www.youtube.com/watch?v=cglaHHuotz0 back up video

Nuclear Fusion Equations

Nuclear Fission A large nucleus is split into two or more smaller nuclei (process sped up by hitting it with a neutron) Releases Alpha, Beta, Gamma Rays and a lot of energy https://www.youtube.com/watch?v=po7a4J8cwwc – nuclear bomb compilation http://www.youtube.com/watch?v=yTkojROg-t8 - explanation of fusion - Used to power nuclear weapons (atomic bombs), nuclear subs, & nuclear power plants

"Little Boy" was dropped on the city of Hiroshima 970lbs yields 15kt of TNT 141lbs of uranium, followed seventy-six hours later on August 9 by the detonation of the "Fat Man" nuclear bomb over Nagasaki 10,600 pounds plutonium grade (4.7 kiloton) 14 lbs of plutonium and only about 2lbs fissioned http://nuclearsecrecy.com/nukemap/ map of known atomic tested atomic bombs http://www.teachersdomain.org/resource/phy03.sci.phys.matter.fusionbomb/ - hydrogen bomb history video after atomic bomb WWII

Nuclear Power Plant Clean power Need water to cool down the reactor

Nuclear Fission Chernobyl power plant - 1986

Nuclear Fission Fukushima - 2011

Chemistry Cat!

Assignments Summary - What are the pros and cons of nuclear power? Lab making heat due next class Clean up procedure: scrape the remain inside the petri dish in the trash can, then rinse

Fission vs. Fusion Fission: splitting of the nucleus into smaller fragments Think of the domino effect; atomic bomb U-235 + slow moving 10 n  smaller atoms + more slow moving 10 n + a lot of energy Fusion: combining of the nuclei to produce a greater nucleus Think of the sun; hydrogen bomb 4 11 H + 2 0-1 e  42 He + energy

Online Lab 1 laptop per group https://phet.colorado.edu/en/simulation/nuclear-fission Click “Play”, “Later”, “Run” Find the secret function in the “Chain Reaction” tab that let you make an atomic bomb