Use this page to keep up with your homework and review what we did in class!
Unit 3 – Solubility notes (pdf)
Unit 4 – Acid Base Notes_part 1 (pdf)
Unit 4 – Acid Base Notes_part 2 (pdf)
Unit 4 – Acid Base Notes_part 3 (pdf)
Unit 5 – Oxidation-Reduction notes (pdf)
Thurs, May 20
Eeks….I guess it’s been a while since I updated the website! Sorry!
There is a QUIZ on Tues, May 25 on Balancing full redox reactions, redox titration calculations & theory, electrochemical cells and standard reduction potential (Eo).
Do this worksheet for practice! Redox worksheet
Answer Keys: 
Tues, May 4
5.4 – 5.5 Balancing Redox reactions using the half-reaction method
Redox Quiz #1 on THURS, May 6th (5.1-5.5)
Complete Oxidation-Reduction worksheet for practice. (I will not be collecting it for marks, but it is worth your while to do it!)
Oxidation-Reduction Answer Key:
Fri, April 30
Lab 21A – Worksheet due Tues, May 4th
Wed, April 28
5.3 Predicting the spontenaiety of redox reactions.
Prepare for Lab 21A on Friday (Read Heath procedure)
Mon, April 26
Acid-Base Unit Test–Good luck!
Thurs, April 23
5.2 Oxidation Numbers (become familiar with Ox #’s. Hebden p. 194 #3 (a – i, n, s), 4, 5)
HW: Study for Acid-Base Unit Test, Monday April 26th!
KEY Acid-Base-Salt Review part 1
KEY Acid-Base-Salt Review part 2
Tues, April 20
Finished Review of Acid Base Unit. Download the Acid-Base Review here (ppt as a pdf).
Started new unit: Oxidation Reduction. 5.1 Redox Summary
HW: Hebden p. 192 #1 & 2
Fri, April 16
Review: Acid Base Unit. Download the Acid-Base Review ppt above.
UNIT 4 TEST: Monday, April 26th
Wed, April 14
Today we finished up the Acid Base Unit (FINALLY!) with 4.21 Acid Rain. The notes page can be downloaded from the “Acid Base notes_part 3” above.
HW: Formal lab 20C write up due Friday, April 16. If you need extra time, you can email the lab report to me (ecoolidge@vsb.bc.ca) by 12:00am (MIDNIGHT) on Saturday, April 17, and it won’t be considered late.
Mon, April 12
Today we completed 4.19-20 on Buffers.
Reminder: Formal lab 20c write-up due on Friday, April 16
Thurs, April 8
Weak acid-Strong base titration lab (Lab 20C). Formal lab write up due Friday, April 16. For marking criteria, see Lab 20C marking scheme.
Tues, April 6
Today we went over the remainder of the Acid-Base titration notes. Please complete Hebden set as practice and make sure you master the calculations!
Lab 20C next class
Mon, March 29
Today we reviewed the Indicators worksheet and started 4.16 Acid Base Titrations.
QUIZ on Wed, March 31: 4.14-4.15 Ka/Kb calculations, 4.13 Hydrolysis, and 4.17 Indicators.
Thurs, March 25
Today we took notes on 4.17 Indicators. Please complete the Indicator Practice worksheet for Tues.
Tues, March 23
Today we did Lab 20D Hydrolysis. Due on Thurs: Hydrolysis prelab worksheet, Hydrolysis tour observations, and Follow-Up Questions p. 244 #1, 2, and 5
Fri, March 19
Today we did an in-class contest of “Doozy Questions“. Yes, they made your brain hurt, but that’s not always a bad thing! I’ve posted the questions in case you want to retry them. DO the “Putting it all together” question at the end of the Hydrolysis notes. Seriously, it will feel like a walk in the park compared to “the doozies”.
Wed, March 17
We reviewed Hebden set 29 and completed the next lesson on 4.13 Hydrolysis. Test your knowledge with the “putting it all together question” at the end of the notes page. (Answer is pH = 2.74)
Mon, March 15
Welcome back from March break! Today we reviewed the Acid-Base Quiz #2. We took notes on 4.14-4.15, Calculations involving Ka and Kb. I haven’t created the whole notes package yet, so I will have each lesson printed off for you when you come to class.
HW: Hebden set 29 p. 152 #77-80, 83; p. 153 #85-87, 91 (DO IT!)
Tues, March 2
Today we finished up 4.12 – Mixtures of strong acids and bases. There is QUIZ next class on 4.7-4.12. The acid indicators lab was due today.
HW: Study for Quiz!
Fri, Feb 26
Lab: Acid Strengths & Indicators (due Tues). Determine the narrowest range you can for the six solutions.
Quiz 4.7-4.12 on Thurs, March 4th. This will be the LAST mark on Term 2. There will be NO REQUIZ because of this!
Wed, Feb 24
Today we finished 4.11 pH and pOH notes. Completed practice worksheet on pH and pOH calculations.
HW: Prepare lab on Acid strengths and indicators
Mon, Feb 22
Continued on with 4.11 pH/pOH calculations
HW: Hebden set 26
Thurs, Feb 18
Today we started 4.11 pH/pOH/pKw
HW: Acid Base worksheet 4.7-4.10 due Monday
Tues, Feb 16
We completed 4.7 – Ionization constant of water (Kw) and started 4.8-4.9 Ionnization constant of weak acids (Ka) and weak bases (Kb)
HW: Hebden set 25
Thurs, Feb 11
Welcome back after midterm week! Today we went over the Acid-Base quiz & Midterm.
HW: Download new notes package (A&B part 2…see above)
REQUIZ: Tues, Feb 16th afterschool. My apologies to those of you who showed up Fri morning to write the requiz. The copiers were down so I didn’t have any quiz papers!
Mon, Feb 1
Quiz 4.1-4.6 Acid/Base today. Requiz will be someday after midterm. I will let you know when we get back to class, but likely Friday, Feb 12th (8:ooam).
We went over Unit II: Dynamic equilibrium review. Here is the multiple choice Midterm review key (pdf) directly from the provincial answer key. My apologies if I told you a different answer in class.
Good luck on midterms! Remember, DO NOT come to your chem room to write your midterm. WED, FEB 3 @ 9:00-11:00am
Block A: go to A326, Block C: go to A312, Block D: go to A 318
Thurs, Jan 28
Today we finished 4.6 examples. Reminder: Quiz on Monday 4.1-4.6
We also completed the Unit 1: Reaction rates midterm review. Work on midterm review questions. (handed out in class)
HW: Study for Acid-Base quiz; Study for midterms!
Tues, Jan 26
4.6 – Relative strengths of acids and bases
Become very familiar with the “Relative strengths of B-L acids and bases”!! In class, I handed out the extra notes page to add to the Acid Base notes package.
Reminder, Quiz 4.1-4.6 on Monday, Feb 1st.
HW: Hebden set 24 (p. 125 #21-23, 24abcd, 26, 27) Yep, do them!
Wed, Jan 20
4.5 Conjugate acids & bases. We also went over the solubility unit test.
Midterm will cover: Units 1-3 (Reaction Kinetics, Dynamic Equilibrium, & Solubility). The Chem 12 midterm is Wed, Feb 3rd @ 9am. Don’t be late!
HW: Hebden set 23 (p. 121 #16-19)
Mon, Jan 18
Reviewed Lab 19D & Lab 20A
4.3/4.4 The Hydronium ion (H3O+) and the Bronsted-Lowry theory of acids and bases
HW: Hebden set 22
Thurs, Jan 14
Solubility Unit Test (took whole class)
HW: Complete Lab 20A; WS 4-1 (for Block 1-3)
Tues, Jan 12
Lab 20A — Arrhenius Acids & Bases due Monday
Study for Solubility Unit Test (25 MC, 15 short answer = 40 pts) Thurs, Jan 14
Fri, Jan 8
Reviewed 3.9/3.10. Started Acid-Base unit (4.1)
HW: Block 1-3: Lab 19D titration; Blocks 1-1 and 1-4:Worksheet 4.1 Common Acids & bases
Wed, Jan 6
Lab 19D III – Titration – Determining the chloride concentration of an unknown solution
(Block C (1-3) will complete the lab on Friday due to the grade 12 assembly.)
HW: Complete Lab 19D worksheet due Friday. Please download and print off the acid-base part 1 notes. (See link above)
Reminder: Solubility Unit Test on Thurs, Jan 14th.
Mon, Jan 4
Happy New Year and welcome back!
Today we went over Solubility Quiz #2 – The Requiz is afterschool on Tues, Jan 5th.
3.10 – Common ion effect and altering solubility
HW: Water hardness (3.9) worksheet; Read Lab 19D III (Lab on Wed); Hebden set 20
Thurs, Dec 17
Brain break! Chemistry of Snowflakes
Have a wonderful holiday, enjoy your break, and Happy New Year! While on break, please work on the Unit III: Solubility Review. Answers & explanations: Unit3 Answers_1 , Unit3 Answers_2 (pdfs)
Solubility Quiz 2 – Requiz: Tues, Jan 5th (after school)
Unit III Test: Thurs, Jan 14th
Tues, Dec 15
Quiz: Solubility #2 3.6-3.8
Fri, Dec 11
Pro-D: No School
HW: Study for Solubility Quiz 3.6.3-8
Wed, Dec 9
3.8 Titrations
Key ideas: A titration is a quanitative procedure to determine the concentration of an unknown ion. The equivalence point is the point at which the indicator shows that all of one ion has been used up. (moles of titrant ion = moles of sample ion). Calculating concentration from titration experiment.
HW: Hebden set 19 (just 3.8, not 3.9 yet); Study for Quiz 3.6-3.8 on Tues, Dec 15th
Mon, Dec. 7
Quiz 3.1-3.5
*Requiz will be after school Mon, Dec 14th. If you were absent for the quiz, you may write the requiz, provided you bring a note validating your absence.*
Heads up! Quiz 3.6-3.8 on Tues, Dec 15th (I know, I know…this entry makes it seem like all we do is quizzes…So not true!)
Thurs, Dec. 3
3.7 Using Ksp to predict the formation of a precipitate
Key ideas: Solubility table only indicates ppt at given concentration and temperature; calculating TIP (trial ion product) and comparing it to the Ksp to determine if ppt forms or not; calculating max/min possible concentrations to form a ppt
HW: 1. QUIZ 3.1-3.5 on Monday (So, study!), 2. Lab 16E due Mon, 3. Hebden set 18
**Note on your Lab 16E: You may have discrepancies between your observations and what a Solubility table says should precipitate. Please go by YOUR observations. Remember, the solubility table only indicates whether a compound has low solubility based on certain concentrations and at 25 degrees C. The room has been hot lately! Also you will notice that some of the compounds have a very, very low Ksp (as seen in the Ksp table). This means that YES, they will form a ppt at some point, but they are very insoluble. Thus, not all your observations will concur with the solubility table.**
Tues, Dec. 1
Lab 16D (pdf) – due Thurs, Dec 3
Lab 16E Worksheet (pdf) – due Mon, Dec 7
HW: Hebden set 17; Complete lab worksheets
Fri, Nov. 27
3.6 Ksp calculations
Key ideas: writing Ksp expressions, using Ksp to calculate solubility
HW: Hebden set 17 p. 91-95 # 40-42, 45, 47, 48, 52, 55
Read Lab 16D and Lab 16E (part I). Be prepared to completed labs on Tues.
SolubilityRulesSong (pdf)
Wed, Nov. 25
Completed 3.5 (Using differences in solubility to identify or separate ions); Time in class to work on Hebden set 16 or Solubility WS
Key ideas: making a table of ppt reactions, writing an experimental procedure
HW: Solubility WS 1— due Friday, Nov 27
Heads up! Quiz 3.1-3.5 on Mon, Dec 7
Mon, Nov. 23
3.5 Using solubility and precipitation to identify or separate ions
(will continue on Wed, Nov 25)
Key ideas: qualitative analysis, using the solubility table (p. 332)
Ms. Coolidge's Classes 