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.

Biology 12

Today we learned about the action potential.  This is what sends a nerve impulse down a neuron.  We watched the crash course video, took notes from a power point and answered a few review questions.  If you missed it:  Go to the link here and download notes and question.    http://msjclassbio12.blogspot.ca/p/nervous-system.html

Biology 12

Today we wrote the Respiratory/Excretory Unit Test.   Next we looked at the anatomy of a neuron and made some neuron models on our desks with modelling clay.  

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!  

Biology 12

Today we took some short notes on how the kidneys regulate the pH of the blood.   We did the blue worksheet on Urinary system reflection questions.   These are due tomorrow.

Practice test was given out for your Respiratory/Excretory system test (on Thursday, June 1).

practice test answers:    1)A     2)D      3)A    4)D   5)B     6)D    7)A     8)A      9)C      10)D    11)omit
12)B    13)D     14)B    15)B    16)A    17)D    18)D     19)C    20)A    21)D    22)A    23)B    24)A
25)B     26)C     27)D    28)D    29)B    30)C     31)B    32)B    33)D     34)A   35)A    36)D    37)C
38)A     39)A     40)D    41)B    42)B    43)B     44)A    45)D    46)A     47)C   48)B    49)B    50)C

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!!