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Chemistry 170 Chapter 19

by: Joseph Notetaker

Chemistry 170 Chapter 19 46657 - CHM 170 - 002

Joseph Notetaker

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This is all of the information on nuclear chemistry.
General Chemistry 2
Mark M Richter
Class Notes
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This 2 page Class Notes was uploaded by Joseph Notetaker on Saturday April 23, 2016. The Class Notes belongs to 46657 - CHM 170 - 002 at Missouri State University taught by Mark M Richter in Spring 2016. Since its upload, it has received 11 views.


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Date Created: 04/23/16
Chemistry 170 Chapter 19 Nuclear processes often result in one element changing into another, frequently emitting tremendous amounts of energy. 4 2+ α particle = 2He β particle = e - 0 γ particle = 0γ Proton: 11P Neutron: 10N Electron: 0-1e Alpha Decay Alpha decay occurs when an unstable nucleus emits a particle at high energy Alpha particles cause atoms to change into other atoms Heres an example of an alpha decay reaction: 224 220 4 88a= 86Rn+ 2e Notice that the numbers on both sides of the equation are equal Alpha radiation has the highest ionizing power but the lowest penetrating power Beta Decay Beta decay occurs when an unstable nucleus emits an electron (A neutron splits apart to form a proton and an electron) Here is an example of a Beta decay reaction: 249 249 0 97k= Cf98 e −1 Beta radiation has intermediate ionizing and penetrating power Gamma Decay Gamma ray emission is a form of electromagnetic radiation they are high energy photons which are given off as a byproduct of alpha or beta emissions Here’s an example of a Gamma decay reaction: 137 137 0 56Ba= Ba56γ 0 Gamma Rays have the highest penetrating power and lowest ionizing power. Radiation is a natural component in our environment and humans are exposed to it every day. Half-life is the time it takes for half of the nuclei to decay Here are a few equations: Rate=KN N = Number of radioactive nuclei 0.693 T1= K 2 A¿ t ¿ A¿0 ¿ ¿ ¿ ln¿ Nuclear fission is the splitting of atoms. This causes a chain reaction. Nuclear fission can be used to generate electricity Nuclear fusion is the combination of two light nuclei to form a heavier one When radiation ionizes important molecules in living cells, problems can develop.


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