Presentation on theme: "Hon Chem Ch 21 Pg 646 Types of Radioactive Decay 1.Alpha – 2 protons and 2 neutrons, He nucleus, stopped by paper or clothes ex: Pg 646 2.Beta – neutron."— Presentation transcript:
Hon Chem Ch 21 Pg 646 Types of Radioactive Decay 1.Alpha – 2 protons and 2 neutrons, He nucleus, stopped by paper or clothes ex: Pg 646 2.Beta – neutron splits into proton and electron, proton stays, electron leaves, stopped by lead or glass ex: Pg 646 3.Gamma – high energy invisible light wave, no change in mass, stopped by lead and concrete, picture Pg 647 **Graph Pg 650, Pg 664 #11-13 in NB
Half-Life Pg 648 Time it takes for half of radioactive isotope to decay, graph pg 648 Practice Pg 649
Fission and Fusion Fission – heat from splitting the atom creates steam that turns turbines and makes electricity, Pg 657-58 Fusion – two H atoms combining to make 1 He atom, creating huge amt of energy in the sun Pg 659 Turn in: Pg 665 #26-29, 40 a, b, 41, 42, 43, 46 (c= speed of light = 3 x 10 8 m/s), Pg 662 1, 2, Pg 667 #1,3,6,8,9
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