Chapter 21 The main points of chapter 21 are as follows- Radioactivity and isotopes Email tomrdavidson@gmail.com and tell me you have checked the web page. This will give you ten points towards the test on this chapter. Home work problems (New book updated)- 7, 11, 12, 13, 14, 15, 17, 27, 31, 33, 36 video is using different numbers , half life activity homework |
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