Vacation Homework...

Dear Chem students, hope you're having an awesome vacation. Word of "warning"- there is homework to complete before we get back to class on Jan. 13th. Textbook reading, Chapter 9.1-9.5, including the self-checks. As you do each section, answer the ALL the chapter QUESTIONS and work out only the BLUE chapter PROBLEMS on pages 281-284 (answers to the blues are in the back of the book, so check as you go). It's math-work, so dig in and "just do it." I'll try to post some video tutorials as I find them.
Those of you who don't much like math, persevere, because someday, maybe, there will be this "Aha" moment, when the mental skills and the resulting character development will lead to insights and opportunities that might never have been given except that you had "applied yourself to wisdom" in this way, at this time. "Count it all joy..." may possibly require math.

For what you need to review the mole & molar mass ,here is Hank:

You may remember Eric's demonstration experiment, with the strips of aluminum foil dropped in the hydrochloric acid, which formed bubbles and caused the aluminum to "disappear".  It was actually a single displacement reaction,

  2 Al + 6 HCl ---> 2 AlCl3 + 3 H2 

Eric used a little bit of aluminum, but a lot of acid.  Aluminum got "used up" but there was plenty of acid left over.

Afterwards, to neutralize the acid, Kathy poured baking soda into the bottle, causing a lot of bubbles,  repeating  this process many times till finally the acid was completely neutralized.  This concept of LIMITING REACTANTS is what we begin to discuss in Chapter 9, so for an overview, here's Mr. Anderson to explain:

Now work in your textbooks, as described above, to complete your understanding.  I expect this could take a few hours. 

When (not if) you get stuck, post your questions in the comments and as a group we can try to answer.

  

Finally...the test.

Here's the test:  Chemistry fall  final exam  It's 5 pages long, so get started!  NO EXCUSES, especially on Thursday; if you have a problem printing, work it out or call me immediately.  NO LATE TESTS.  You will be rewarded with a wonderful Christmas break.  You may use a periodic table until you are asked not to on page 4.
By the way, thanks so much for your efforts with the chemical reaction demonstrations.  I thought they were pretty exciting and worthwhile, beyond my expectations, and enjoyable.

On Monday we will complete our demonstrations. Please use the break time to prepare, since class will be a little shorter (Mr. DeLeo needs a little extra time--I guess you are doing plays??)  I will send home a take-at-home test, due on Thursday.

Homework is the worksheets10-2 Molar Mass - prime numbers only, and 10-3 Mole conversion, just the odds [insert movie references here].  This worksheet includes converting moles of gas; you can probably  figure that out on your own but we will not have those kinds of problems on the test. Worksheets and Answers  (just a note: a lot of these problems have to do with the moles of a gas, which we haven't really discussed.  Enough to say, all gases take up the same amount of space at room temperature and sea level (standard temperature and pressure - STP)  and therefore 1 mole of any gas = 22.4 liters/mole) which fills about 6 balloons.

Review vocabulary, elements, periodic table, naming ionic compounds, balancing equations, types of reactions.

Also, Jacqueline, Anthony, Abel, and Brina are up for demonstration experiments on Monday.  Let me know what you might need, asap.  Simple is just fine.

Fireworks! At Last! (do watch this at home...)

Yikes! Brittany took my car, and all my science books!  Homework is late! In the meantime, complete the combustion worksheet from class, as well as the two pages right before it, having to do with balancing and classifying equations. -- I definitely did not make myself clear, sorry! Do 10-5 (combustion) and 10-1, 10-2.  If you have already done 10-3 and 10-4, great job!  I will post the answers to all 5 worksheets at the end of this paragraph as soon as I finish them; done) ...but to be clear, only 3 of the 5 worksheets for now. 
Worksheet answers here

Eric, Danny and Avery - Your chemical reactions demonstrations are on Thursday.

and here are some videos for review and just interesting:

And this is an hour-long video, but go ahead and start it...I think you will like The Science of Fireworks!

Prepare!

...to meet thy Doom. [just something from the old days]

Priority for those of you who are doing chemistry demonstrations on Monday...prepare your lab, acquire the necessary supplies (NOT on Sunday) asap, calling me is better than email, and sooner is better than later.  (Lily, Jadon & Jesse)

From the Review worksheets: 8-2 Naming Ionic Compounds, 8-3 Writing Formulas, and if you still need work, but later is OK => 8-4 Ionic Compounds, Names & Formulas. Review to remember these 6 polyatomic ions and their charges:  hydroxide, nitrate,  carbonate, sulfate phosphate, ammonium. (nob,cob,soy,poy)  hints for remembering polyatomic atoms 

 
From the Textbook 8.6 & 8.7 Ways to Classify Reactions, and Other Ways to Classify Reactions, do self-check and section questions 1-5 on page 243, including the What If? on the side.
Suggestion: When you read any chemical formulas, say the words, not the letters, in your mind.  For instance, think "sodium chloride" or "potassium hydroxide", not spelling NaCl or KOH.  Don't let your brain skip over the equations; read and picture what is happening at the molecular level  as best you can.  Feel free to write notes in your book, like "CH4=>methane", and pretty soon the chemical equations will be less like phonics and more like sight-reading.  8.5-8.7 section answers

REreReView...

First of all, let's solidify the work we did in class exploring the six different kinds of chemical reactions.  Re-read the handout introduction and work through the pages following, making sure you have correctly formulated the balanced equations for each station.  Then complete the last page which is a worksheet with balancing equations.
Read textbook sections 8.4& 8.5,   (pages 226-235) be sure to do the self-checks in the tan boxes. Answer ALL end-of-chapter questions (page 246) for each section, #17-23, and #24-29. Turn in this homework Thursday.  ALSO bring a water sample from home to Thursday's class. (A film canister or any small container will do.)

Last homework period we got started on the packet of review worksheets; you should already have completed the first two [1.1 (Element Names) and 4.2 Isotope Notation], now continue with 6.2 - Information on Periodic Table, and watch this series of 3 videos: http://www.youtube.com/watch?v=TIxiDESxc0I&list=SPF75D9C525639675C&index=1

Next Monday we will start giving "demo" reactions - kinda like speech class - each student will present a chemical reaction, with the balanced equation, to the class.  On Thursday I will bring some books that you can choose from, or you can troll the internet.  You will need to use what either you have or I have, so ask me.  Nothing really dangerous, sorry. 

We will have a semester "final" in two weeks!  Make sure you are confident regarding vocabulary for chapters 1-8. For reference:
http://quizlet.com/26767357/world-of-chemistry-chapter-3-key-terms-flash-cards/
http://quizlet.com/13506344/world-of-chemistry-chapter-4-nomenclature-flash-cards/
http://quizlet.com/10765019/world-of-chemistry-chapters-5-and-6-flash-cards/

http://quizlet.com/19136971/world-of-chemistry-chapters-7-and-8-flash-cards/
These are all put together by students and they may contain errors; nevertheless, they may be helpful.

 HEY! I FIGURED OUT HOW TO USE MY SCANNER...so now I can post the answers to the textbook questions. Please avail yourself, because the best way to see if you need extra help is to check your own work immediately.  So... section 8.4 answers and section 8.5 answers