Chapter 16 Nuclear Energy Warm-up: Describe the typical atom (its parts, how it works, etc.) Chapter 16 Nuclear Energy

Vocabulary: Nuclear / Atomic Energy Radiation  “radiate” = give off; emit Radioactive Decay Alpha Particle = He (Helium) nucleus = 2p/2n (atomic mass # of 4 … no e- so charge = 2+) Beta Particle = electron (e-) or positron (e+) Gamma Ray = light energy … no mass, no charge

Complete the concept map using radiation definitions: Nuclear Radiation … is released during … … can be in the form of a/an …

Nuclear Radiation … is released during … … can be in the form of a/an … Alpha particle Radioactive Decay Beta particle Gamma ray

Half-Life: the time needed for half of a radioactive substance to decay

2 TYPES OF NUCLEAR ENERGY (ENERGY FROM THE NUCLEUS) FISSION Nucleus of large atom splits into 2 or more fragments, releasing addt’l neutrons & energy Creates a CHAIN REACTION (continuous series of fission rxn’s) “uncontrolled”  nuclear bombs, etc. “controlled” nuclear power plants  Less pollution than other power plants  Danger from accidents & waste disposal FUSION 2 or more Nuclei of small atoms join to create a larger nucleus, releasing energy Our SUN uses Fusion  Safer & more efficient than Fission … fuel source (Hydrogen) is abundant  Technology not yet available for Fusion

https://www.youtube.com/watch?v=4pQDcQxZA8E

Team Exit Tkt Ch.16: TEXTBOOK 43 pts p.178-179: 1 & 2(2e) … 63 … 92 p.180-181: 1 & 2(1e) … 3 thru 7(2e) ... 102 p.182-183: 1 thru 10(2e)

TODAY Finish the Team Worksheet  be sure you know the info (“no slugs”). When the team is finished, study for an Individual Exit Ticket that covers the basics about atoms.