Thursday, December 1, 2011

Count down to finals has begun

Good morning chemistry students!
As the December snow begins to fly, we are very busy finishing up our semester work.  Yesterday we shifted our focus from ionic and metallic bonding to covalent bonding and the relative strength of covalent bonds.  Our lab simulated the strength of single, double, and triple bonds using rubber bands and different masses.  Don't forget to follow the rubric for the lab write-up as this is the last formal lab write-up for the semester.  We have completed two polyatomic ion quizzes and will have our last one tomorrow.  Next week, we will have nomenclature quizzes.  Tomorrow we will draw lewis structures and will also look at models of molecules to determine the different molecular geometries.  Keep practicing your nomenclature rules!
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8 comments:

  1. BrandonDecember 1, 2011 at 3:50 PM

    http://boingboing.net/2011/12/01/one-of-the-earliest-known-exam.html
    here is an awsome story i found

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  2. AnonymousDecember 1, 2011 at 3:58 PM

    Hi Mrs. Engel! What page was our lab on that we're doing the report on?

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  3. DonnaDecember 1, 2011 at 4:03 PM

    Great Story Brandon! Caleigh the lab is on page 226.

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  4. AnonymousDecember 1, 2011 at 5:57 PM

    I'm really confused with the graph section of the lab report. is it okay if i come in early tomorrow to work on it with you? thats the only part that i havent done and i read the instructions in the book and it doesnt really make sense on the organization of the graph.

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  5. Erin MathewsonDecember 1, 2011 at 6:58 PM

    Hi Mrs. Engel! So for the lab, are we supposed to discuss the bond dissociation energy stuff or are we supposed to talk about just covalent bonds? and for the methods, are we supposed to paraphrase the ones in the book or just copy them? thanks!

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  6. DonnaDecember 2, 2011 at 4:47 AM

    Hi Caleigh - I should be in my classroom after 7:15 am.
    Erin - paraphrase the methods and I would include the different bond dissociation energy into your introduction/conclusion

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  7. asianchic58December 6, 2011 at 2:32 PM

    Hey Mrs. Engel! I was wondering what the homework is for today.

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  8. DonnaDecember 6, 2011 at 5:55 PM

    Hi Julie,
    I assigned problems from page 281 in your textbook #57, 58, 60, 61, and 65. The bell ringer was to compare and contrast ionic and molecular bonding. We also took notes on naming binary molecular compounds and acids.

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