Today, we took our Atomic Structure and Radioactivity test, signaling the end of the unit. The test was not as difficult as I thought it was going to be, but there was one question for sure that confused me. (A certain element's half life is 3.1 minuets. How much of the 155 g sample be left after .40 hours. I knew how to solve it, but the answer I got every time didn't match any of the answers on the test which was frustrating) I also thought there would be more questions about the scientists that discovered the different parts of the atoms or more questions about Average Atomic mass/percent abundance. Overall, I thought the test was fairly easy and I think I managed to do pretty good on it.
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| http://tse1.mm.bing.net/th?id=OIP.Me5a5efe153f6211e018671dacab33138H0&pid=15.1 |
Some study tools that I used are:
SoftSchoolQuizzes for reviewing half lives
ProProfs for reviewing chemical equations and parts of the atom
Study Guides and practice sheets on Schoology
Notes from powerpoints in class
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