Monday, January 16, 2017

Spring 2017 CHEM 312: Lecture 1 Introduction and Chart of the Nuclides

The class outcomes, expectations, and grading are explained.  A history of radioelement discovery and radiation research is presented. The Chart of the Nuclides and Table of the Isotopes are discussed and used.  Atomic properties, nuclear nomenclature, X-rays, types of decays and physical forces are introduced. Part one viewing time 38 minutes, part 2 viewing time 42 minutes.  The PDF quiz 1 is assigned 17-Jan-17 and due 24-Jan-17.

46 comments:

  1. I just completed the lecture and submitted the quiz via email. I'm a little confused about the thermal neutron absorption cross section data, is this something we will cover later in the course?

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    1. The other information will be covered in the course. For now the goal is to be able to identify data. The thermal neutron cross section will be covered in Lecture 2, then in more detail in the course.

      thanks for the question!

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  2. i have no ideal for question 3, can you give me a sample?

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  3. I have updated PDF quiz 1. Question 3 now has pulldown answers. Please use this PDF quiz, the webpage will be updated. The website http://physics.nist.gov/PhysRefData/XrayTrans/Html/search.html can also be used. One can also use the Z and energy data to generate an equation to solve. From the graph in question 3 figure the relationship of Z versus square root E should be linear.

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  4. I just submitted the quiz via email. i just solve the question 3 by put the element in the chart and get the answer from the website that you provide, is it right?

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  5. I've completed the lecture as well as the associated quiz. Major difficulties when attempting to submit.

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    1. PDF quiz 1 is attached to the email you sent. thanks for the submission.

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  6. I have submitted the quiz via email

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  7. Lecture parts 1 and 2 are completed, moving onto lecture 2

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  8. Dr. Czerwinski I have sent you my pdfquiz1 via e-mail. I thought the discovery of radioactivity was interesting. also,not sure if other students had issues with some of the weblinks such as the course reading list?? I just get an error or a blank site.

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    1. thanks for the comments. Please let me know which readings are errors.

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    2. *curium discovery
      *table of isoptopes
      course reading link:
      nuc&radchem 3rdEd Friedler

      I tried to again today and still no luck.

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    3. thanks for the comments. I do not have a problem with the nuclear and radiochemistry. Try

      http://radchem.nevada.edu/docs/course%20reading/Mod%20nuc%20chem.pdf

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  9. I have completed Lecture 1 and the corresponding PDF quiz. There was a lot to learn in this lecture! Very neat.

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  10. I completed both parts of the lecture as well and sent in PDF quiz 1. A ton of interesting information, I enjoyed.

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  11. I forgot to mention that I emailed you the quiz as a PDF attachment. I hope it made it to you okay!

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  12. Lectures part 1 and part 2 are completed. I've submitted quiz 1 via email attachment yesterday (Sunday).

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  13. I completed the lectures and I have submitted quiz 1.

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  14. Hi! I sent PDF Quiz 1 to you as an attachment through my email after I went over both parts of lecture 1. Hope you received it.

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  15. I finsihed the lecture and submitted the PDF quiz, I sloved number three with the equation of the line, but I am not sure how to get the number without the line. I don't think I really understand that question

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    1. From the figure we see the relationship between Z and the square root of the frequency. The relationship between E and v is E=hv. Since this is true, then the relationship between Z and E is bases on square root of E. Using the data in the question one can generate the equation square root E = 3.329Z-6.18. Input Z and you get E. What I was really looking for as the general trend as Z increase E increase. Based on the data there were boundaries for the values. For example U has a Z of 92. This must be above value for Hg, Z= 80. The only possible answer is 94650 eV. Tm and Lu are at Z= 69 and 71. The values must be near Yb, with Tm lower.

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    2. Thank you,
      That makes sense and is also what I did to solve the question, I just thought maybe I was missing something. I resubmitted the PDF quiz

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  16. I've finished both parts of lecture 1 and submitted the pdf quiz 1! Thanks

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  17. I submitted my pdf quiz 1 and resubmitted quiz 0

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  18. This comment has been removed by the author.

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  19. I just completed lecture 1 and submitted quiz 1. Finally a class I can listen while at work.

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    1. Thanks for the comment. I am happy to provide the entertainment! I do think the flexibility can be usefulu.

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  20. Hi, I just submitted my quiz. Sorry it's a bit late.

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    1. Not late at all. All assignments for CHEM 312 are due to 11:59 PM on the due date.

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  21. quiz 1 complete, though #3 was confusing

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  22. Quiz 1 is completed. I'm not sure if I'm behind but it took me a while to find out what the Cavendish laboratory was and not to mention I still don't completely understand question 3 as I couldn't connect Z with E. Perhaps I should be reading the additional literature provided. I mean that is a given, but perhaps I missed something in the mp4 videos. I found this lecture interesting, particularly the section on history.

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  23. Lecture 1 quiz submitted. Thanks!

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  24. Quiz sent. Many issues with filling out after downloading the PDF.

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