Chemistry 10-19-11 Chemical Formulas Review & Important Announcements

CHEMISTRY: So did today help? How’s it going with writing formulas and naming compounds? On the worksheet for tonight, write the formula in one column and in the other column, write the name of the formula you just wrote – just like we did today in class. Lab tomorrow, don’t forget the lab write-up!

A couple of important announcements: The polyatomic ion quiz will be Monday, not Tuesday. Also, don’t forget to turn your AIG trip permission slip in on Thursday.

Speaking of class – bad day for recording, especially when the teacher forgets to turn on the mic! Here’s the vodcast, but with no sound. I’m still posting it, however, because I want you have access to the “Naming Chemical Formulas” flow chart that I showed you in class today. Copy this chart into your notes and use it every time you write a chemical formula name until you can do it correctly without looking!

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23 thoughts on “Chemistry 10-19-11 Chemical Formulas Review & Important Announcements

  1. I’m having a lot of difficulty with this sheet. I don’t know if it is because I’m over thinking or because I truly just dont understand. Could we go over it tomorrow in class?

  2. The first chemical formulas worksheet,especially the compounds with poly-atomic ions, was difficult at first, but I think working them in class today really helped me understand. Is Worksheet 2 due on Monday?

  3. since we did fridays work in class instead of the lab, should we do fidays homework and the research or just the research?

  4. Hey Mrs. SKinner,
    Is the research still do tomorrow? or has that changed too? I asked a couple of people..and someone told me that they didn’t think it qas due tomorrow!

  5. The formula worksheet was really helpful, by writing all those formuals it really helped me to understand them a lot better, thank you.

  6. Even though you couldn’t read my writing the chemical formula worksheet really helped…I needed the extra practice

    • Well Jake,
      MnO4 has a charge of -1
      NH4 has a charge of +1
      Since the charges cancel, the formula would be:
      (the numbers are supposed to be subscripts, by the way)

      PS: Never put parenthesis around single Polyatomic ions and always name ions with charges.

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