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Hon Chem Ch 21 Pg 686 Types of Radioactive Decay. Alpha – 2 protons and 2 neutrons, He nucleus, stopped by paper or clothes ex: Pg 686 Beta – neutron splits into proton and electron, proton stays, electron leaves, stopped by lead or glass ex: Pg 686
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Hon ChemCh 21 Pg 686Types of Radioactive Decay • Alpha – 2 protons and 2 neutrons, He nucleus, stopped by paper or clothes ex: Pg 686 • Beta – neutron splits into proton and electron, proton stays, electron leaves, stopped by lead or glass ex: Pg 686 • Gamma – high energy invisible light wave, no change in mass, stopped by lead and concrete, picture Pg 687 **Graph Pg 690, Pg 703 #11-13 in NB
Half-Life Pg 688 • Time it takes for half of radioactive isotope to decay, graph pg 688 • Practice Pg 689
Fission and Fusion • Fission – heat from splitting the atom creates steam that turns turbines and makes electricity, Pg 697-98 • Fusion – two H atoms combining to make 1 He atom, creating huge amt of energy in the sun Pg 699 Turn in: Pg 704 #26-29, 40 a, b, 41, 42, 43, 46 (speed of light = 3 x 108 m/s), Pg 706 1, 2, Pg 707 #1,3,6,8,9