Chemistry 8-31-11 Significant Figures

CHEMISTRY – Great job on using sig figs today! Here’s the lecture from Wednesday on identifying significant figures and using them in calculations. Don’t forget to keep practicing! And speaking of practice….Help Session, Friday morning at 7:15. ๐Ÿ™‚


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28 thoughts on “Chemistry 8-31-11 Significant Figures

  1. When you have the number 6.4105 as the sum of two numbers and need to round to the tens place, does the 0 change to a 1?

    • No. You don’t pay any attention that zero. The 1 will tell you what you need to round the 4 to. (I’m assuming that you meant the 10ths place)

  2. I really appricate the podcast and videos on the website. I have been sick for two days and this helpped me get what i have missed in class. i hope you don’t stop doing this. Thanks again ๐Ÿ™‚

    • Brandon – We’ve missed you!! I hope you are feeling better. Glad the vodcasts are helping! Hope to see you tomorrow!!

    • Ashley – We missed you yesterday! I’d watch the vodcast from the day you missed and take notes on it yourself, if I were you. Holler if you need help!

    • Rachel – Check your notes, I think it’s there. You use the least number of sig figs in the problem for the sig figs in your answer. ๐Ÿ™‚

  3. When I first looked at all of our homework for the past week, I thought I was going to either have a heart attack or go completely brain dead, but now I think I am starting to get the hang of things and don’t mind doing the problems. Your powerpoints in class and the podcasts have helped me alot.

  4. Ms.Skinner, since we have learned the sig figs, should we abey the rules of the sig figs in the labs?
    I mean when we calculate something during the labs should we obey the rules all the time?

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