Chemistry 11

More practice for the final exam today.  Work on 60 minute mock final when you are done the practice assignment.   Answers to Part II:

1) D      2) D      3) B      4) D      5) B      6) A      7) A      8) A      9) C  

10) D     11) B      12) D      13) A      14) A      15) C      16) B      17) D

18) A      19) B      20) B      21) B      22) B      23) B     24) D      25) B

26) C      27) A      28) B      29) C      30) D      31) B      32) A      33) A

34) D      35) D      36) A      37) A      38) D      39) B      40) C      41) A

42) C      43) A      44) C      45) Omit (D)     46) C      47) A      48) D      49) Omit (B)

50) C

Chemistry 11

Answers to selected questions on the exam Review booklet (due on Monday, June 19th)

Mole Concept
3)  Number of moles of propane:  1.66 x 10-4        Mass in grams of propane: 7.3 x 10-3


4a) mass of one atom:  9.2 x 10-20

4c) molecules in a glass of juice: 1.8 x 10 21

5) 0.589 mole of Pb            8) 1.24 M        9) 0.45 moles

Chemical Reactions Review
3) coefficients: 1, 6, 6, 6               6) coefficients:  2, 5, 2

9e) exothermic        9f) endothermic          9g) exothermic         h) endothermic

15) HCl + H20----------------H3O+    + Cl-     

16d) 1.00 grams of each reactant produces 1.21 g of NH3 since N2 is limiting


Solutions
5c) Final concentrations are:  Al+3= 0.03 M             Cl-=0.09 M

7) 7.5 M is the solubility of KNO3 

Chemistry 11

Today we did some review on Limiting and Excess Reactants.   We then practiced our big review booklet.   It is due on Monday June 19th.   Some answers to be posted soon. 

Chemistry 11

Today we FINISHED chemistry 11!!   Last topic was functional groups.  We watched a video and took some notes on functional groups.

You should finish the worksheet on Functional groups for tomorrow.   Circle and name the functional groups. 

Hebden Questions you should have completed for this unit:  pg. 

Chemistry 11

Today we did more naming and drawing alkane structures.  We looked at cycloakanes, and alkyl halides.  Homework:  pg. 223  Ex: 15, 16 (a-c) and pg. 225  Ex: 17, 18 (a-c)

Chemistry 11

We continued with organic chemistry and naming alkanes (compounds with C and H). 

Homework:  pg. 219 Ex: 3,  pg. 220 Ex: 5, 6   pg. 221 Ex: 8 (a-e)

Chemistry 11

Today we started our last unit!!    Organic Chemistry.   We took notes on writing formulas and naming hydrocarbon molecules with only single bonds (alkanes).  Make sure you get these notes if you were away.

Chemistry 11

During the double block we finished off lab 16B and measured absorbance and % transmittance of our solutions.   The lab is due on Friday with Questions and Calculations # 1-4.  pg. 170

Next we wrote our solutions unit test.  Challenging multiple choice for sure!  

Chemistry 11

Today we reviewed the Solutions Unit by looking at solubilities of polar and non-polar solutes and solvents.  We did the lab:  16A Polar and Non-polar solutes and solvents.   Do all questions #1-5 at the end of the lab.  No conclusion or follow-up questions.

Some answers to selected Unit 6 Solutions Review Assignment:
2) Solvent is water and solute is salt.
3) Polar solutes and ionic solutes will dissolve in polar solvents, non-polar solutes will dissolve in non-polar solvents.

4a) polar solvent= water             c) a non-polar solute = iodine crystals          e) ionic solute = salt

5b) (NH₄)₃PO₄ -------3NH₄⁺ + PO₄^-3

6b) H₂SO₄ + H₂O -----------H₃O⁺ + HSO₄^- 

^{assume that only one H leaves the acid each time} 

7a) [Na⁺]= 2 x 0.25 M = 0.50 M  [CO₃^-2] = 0.25 M

8) Two kinds of double replacement reactions are precipitation reactions and acid/base neutralizations

9 and 10 a) 

Molecular:  Na₂SO_4(aq)  + Pb(NO₃)_2(aq) -----------PbSO_4(s) +  2NaNO_3(aq)

 

Total ionic:   2Na⁺_(aq) + SO₄^-2_(aq) + Pb⁺²_(aq) + 2NO₃^-_(aq) ---------PbSO_4(s)  +  2Na⁺ + 2NO_{3 (aq)}

  

Net ionic:  Pb⁺²_(aq) + SO₄^-2_(aq) ---------PbSO_4(s)

12) b is a acid       c and e are bases      d and f are neither  

14) ionic solutes will conduct electricity in solution so if you know that the solute is ionic then you know that the solution formed with this solute 

15) [NaCl] = 0.00085 M                    17) Final concentration = 0.13 M

19) 75.0 mL of 2.00 M HCl         21) 0.93 M
 

23) 22.8 g of NaOH

Chemistry 11

Today I gave away Popsicles to those lab groups who came closest to the actual concentration of  HCl and % of acetic acid in vinegar. 

Next we tried to work on our Unit 6 review questions........but really most of us we too excited talking about PROM!!

Chemistry 11

Today we finished off our solutions unit.  I collected the Precipitations and Neutralizations Reactions worksheet.   Next we did Lab 20C:  Acid-Base Titration.   The goal was to get the lightest pink solution possible.     The lab is due on Friday with all Calculations. 

Chemistry 11

Finish solutions unit today with a review of total ionic, net ionic equations and finding precipitate (from Friday).   This is not in Hebden----really part of Chemistry 12.   Worksheet on Precipitation Reactions and Neutralization reactions is due on Thursday. 

Chemistry 11

Today we wrote our quiz on Concentrations/Molarity and turned in the Concentration Assignment

Next we took notes on Conductivity of Aqueous Solutions and Precipitation Reactions

Next we did a very mini lab on solubility.  We wrote the molecular, total ionic and net ionic equations for the reaction of Lead (II) nitrate and sodium iodide.

Homework:  Hebden pg. 212 Ex: 30-35

Chemistry 11

Today we did the TRU chem contest........challenging!

Next we had some time to work on the Concentration Assignment followed by a short movie on elements in the periodic table.

Selected answers to the Concentration Assignment below:   (make sure you show all your work!)

1) 0.315 M         2) 285 mL     3d) 0.0447 moles of Fe⁺³   
                                                                    0.067 moles of SO₄^-2

4d) (NH₄)₂S ------- 2NH₄⁺  +   S^-2

6) [Cl^-] = 0.160 M             7) Final concentration of Na₂S = 0.72 M

9) When you mix the two solutions together, you must first find the NEW concentration of solution 1 and solutions 2 and then add them together Total LiF after mixing = 0.394 M 

10)  [Cl]=0.774 M

 

 

Chemistry 11

Today we looked at how to calculate the concentration of ions in solution and how to write dissociation equations.

Due on Friday:  Concentration Assignment   
Friday Quiz on concentration calculations

Thursday we will write the TRU chemistry contest

Chemistry 11

Today we looked continued our notes on solutions.  Be able to do calculations to find moles, Molarity or volume (L).

Next we studied dilution calculations.  What happens when you want to dilute a stock solution or what is the new concentration after dilution?   We diluted our stock solutions of potassium permanganate with new volumetric flasks.

Hebden:  pg. 98 Ex:  59 (a-c)  60 (a-c) and 62
pg. 102  Ex: 78-81

Chemistry 11

I collected lab 12A with a conclusion

We started Unit 6 today.    Now we get to study Solution Chemistry which is less theory and more doing!

We took notes on solutions/solutes/concentration etc.

Finally we learned how to make a standard solution using a volumetric flask.   No homework!

Chemistry 11

Today we wrote our test on Atoms and the Periodic Table........are you happy that we won't be talking about ionization energy again for a while??

We completed lab 12A by looking at melting times for each of our compounds:

NaNO3 = long melting time
MgCl2 * 6H20 = long melting time
C6H12O6 = short melting time
C12H22O11 = short melting time
KI = long melting time

This lab is due on Friday with Questions #1-3 and Follow-up #1 and Conclusion

Chem 11

If you are gone from Chem 11 on Tuesday May 9th for track we will work on our Unit 5 Review as well as doing the following:  

For each Family listed below, pick 3 elements from the family and 1) write their electron configurations, 2) Describe the appearance of the element 3) List the most important uses  4) What is it's natural abundance and how 5) watch the video for each element and give me some new/interesting facts you learned.   Use MY FAVORITE WEBSITE to do this.  Found HERE  6) Explain what common properties these elements all have.  

Families:  Alkai Metals, Alkaline Earth Metals, Transition Metals,  Halogens, Noble Gases,  Lanthanides. 

Chemistry 11

We went over a few questions from the Lewis Dot Diagram worksheet.

Next we looked at the difference between valence electrons and an atom's valence.

Unit 5 Review is due on Wednesday.  We will work on it tomorrow.