Archive – week 8 – 20 – 21
Week of 10/26 – 10/30
*Please REFRESH this Page every time you view!!!
The 4 day – A, B, C, D cycle looks like this:
Day Period
2 3 4
Monday In class: A Lab Lab Single Class
Remote: Lab Lab Single Class
In class: B Single Class LAB LAB
Remote: Single Class LAB LAB
In class: C Single Class LAB LAB
Remote: Single Class LAB LAB
In class: D Lab Lab Single Class
Remote: Lab Lab Single Class
This weeks 4 day Schedule:
10/26 – Monday “A” Day – period 2,3 (Lab) – I 2(A,C) 3(A) AP CHEMISTRY
–period 2,3 (Lab) – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 4 – I 3(C) 4(A,C) AP CHEMISTRY
-period 4 – R 3(C) 4(A,C) REMOTE INSTRUCTION
10/27 – Tuesday – “B” Day –period 2, – I 2(B,D) 3(D) AP CHEMISTRY
– period 2, – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 3,4 (LAB) – I 3(B) 4(B,D) AP CHEMISTRY
-period 3,4 (LAB) – R 3(B) 4(B,D) REMOTE INSTRUCTION
10/28 – Wednesday – “C” Day – period 2, – I 2(A,C) 3(A) AP CHEMISTRY
–period 2, – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 3,4 (LAB) – I. 3(C) 4(A,C) AP CHEMISTRY
-period 3,4 (LAB) – R 3(C) 4(A,C) REMOTE INSTRUCTION
10/29 – Thursday- “D” Day – period 2,3 (Lab) – I 2(B,D) 3(D) AP CHEMISTRY
– period 2,3 (Lab) – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 4 – I 3(B) 4(B,D) AP CHEMISTRY
-period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
10/30 – Friday “A” Day – period 2,3 (Lab) – I 2(A,C) 3(A) AP CHEMISTRY
–period 2,3 (Lab) – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 4 – I 3(C) 4(A,C) AP CHEMISTRY
-period 4 – R 3(C) 4(A,C) REMOTE INSTRUCTION
10/26 – Monday “A” Day – period 2,3 (Lab) – I 2(A,C) 3(A) AP CHEMISTRY
–period 2,3 (Lab) – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 4 – I 3(C) 4(A,C) AP CHEMISTRY
-period 4 – R 3(C) 4(A,C) REMOTE INSTRUCTION
The Red Team and the Green Team are on Remote today. Please move to the Remote Instruction Page.
Period 2, Period 4 – Class
1. Homework Review –
a) Limiting Reagent Form from last Thursday
b) Weekends Homework
2. Lab 8 – Review –
Period 3 (Lab)
1. Lab 8 – Gravimetric Analysis of a Metal Carbonate – (precipitation analysis) –
Introduction to lab. Identifying unknown through g/mol.
Lab 8 – Gravimetric analysis of a metal carbonate NEW 1920.pdf
2. Lab 8 – precipitate out the carbonate ions and filter the calcium carbonate by the Buchner
Funnel and an aspirator. Placed our precipitate in the oven to dry for Monday.
Data gathering for Lab 8 –
Measure your data from Lab 8 – Gravimetric analysis of a metal carbonate.
a) dry out carbonates with microwave.
b) attain dried mass of unknown carbonate.
c) Dissolve in water (about 200ml)
d) Add 125 ml CaCl2
e) filter precipitate with aspirator and Buchner funnel.
f) dry out precipitate (put measured filter paper on watch glass) in oven.
3. Discussion of Bernouli’s Principle that explains how the aspirator creates low pressure.
Period 4 only:
4. Lab 8 – Started the lab by measuring the mass of unknown carbonate and adding excess calcium
chloride to make the precipitate. I covered your beakers and we will filter Wednesday.
Period 2/4 class lecture:
In the last 20 minutes there is review of Lab 8.
10/26 – Monday Homework:
1. Using the knowledge of how to complete Lab 8, the lab handout given out last Friday, and the 2 Lab 8 review videos below, complete the Form below (the videos).
Lab 8 – Gravimetric Lab Review:
Review of Lab (do not worry if the Lab number is incorrect).
Procedure of Lab 8 explained – Gravimetric Analysis of a metal carbonate:
Lab 8 Form: Gravimetric analysis of a metal carbonate.
End of Monday!!
10/27 – Tuesday – “B” Day –period 2, – I 2(B,D) 3(D) AP CHEMISTRY
– period 2, – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 3,4 (LAB) – I 3(B) 4(B,D) AP CHEMISTRY
-period 3,4 (LAB) – R 3(B) 4(B,D) REMOTE INSTRUCTION
The Blue team and the Orange team are Remote today. Please move to the Remote Instruction Page.
Period 2:
1. Homework Form Review –
2. Mass out precipitates and filter paper that were placed in the oven last Friday.
3. Complete the Lab calculations and determine the chemical formula of the carbonate.
4. Complete the ICE table and particle diagram for the lab.
Working from the mass of the product (CaCO3) you can complete the Stoich table \
of the precipitation reaction.
Period 3:
1. Homework Form Review –
2. Filter, dry and mass out precipitates from solutions Friday.
3. Complete the Lab calculations and determine the chemical formula of the carbonate.
4. Complete the ICE table and particle diagram for the lab.
Working from the mass of the product (CaCO3) you can complete the Stoich table \
of the precipitation reaction.
Period 4:
1. Continue with the lab completion.
2. Started the Quiz (stiochiometry 4c) – finish as a take home.
Today’s Class lesson:
10/27 – Tuesday – “B” Day – Homework
1. Complete all calculations of Lab 8 – Gravimetric Titration of a Metal Carbonate
(These are the steps that you used to complete last nights homework!!!)
A. TAKE out the precipitate (calcium carbonate) and carefully mass out the filter paper and
precipitate. DO NOT MASS OUT THE WATCH GLASS.
B. Calculate the moles calcium carbonate – Use stoichiometry to relate the moles of the precipitate to
the moles of the original salt (unknown metal carbonate).
C. Calculate the Molecular Mass/Formula Mass of the salt now that we know the grams of the
original dried salt (that was measured in the beginning after it was microwaved) and the moles of
the original salt that was determined above.
D. Determine the unknown formula of the salt given that the metal in the salt could only be
Li, Na, or K. Remember that your experimental value will be greater than the molecular/formula
masses of the known salts because the moles determines from the experiment are undervalued.
E. Determine the theoretical mass of the precipitate (calcium carbonate) that would be
produced using the step E and F above. Show all work!
F. Calculate the percent yield and percent error using the theoretical value above.
G. Complete the diagram on the bottom of the second page that illustrates all compounds in
the solution before you filtered out the precipitate.
2. Complete the Take-home quiz – (Stiochiometry 4c)
The Blue team and the Orange team will hand this in tomorrow in class.
The Red team and Green Team will hand in class Thursday.
3. Complete the Golden Arches (Stiochiometry 4a – Precipitation – limiting reagent – quiz.pdf) quiz
The Red team and Green Team will hand in class Thursday.
The Blue team and the Orange team will hand this in Friday.
End of Tuesday!
10/28 – Wednesday – “C” Day – period 2, – I 2(A,C) 3(A) AP CHEMISTRY
–period 2, – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 3,4 (LAB) – I. 3(C) 4(A,C) AP CHEMISTRY
-period 3,4 (LAB) – R 3(C) 4(A,C) REMOTE INSTRUCTION
The Red Team and the Green Team are remote today. Please move to the Remote Instruction page.
Period 2, Period 3 – Collect Take home quiz – (Stiochiometry 4c)
1. Classwork – Equilibrium Constants determining the “amount of completion”.
We will complete questions 1 and 2 on the backside of this worksheet that we started last week.
2. Classwork – Keq and Q – I will walk you through these problems that integrate all concepts we have learned
Period 4:
1. Error analysis for Lab 8 – Gravimetric analysis of a group 1 metal carbonate.
2. Lab conclusion writing – Lab 8
3. Take Home quiz completion – Stiochiometry 4c is due in class!
Today’s Class lesson:
To be posted..
10/28 – Wednesday – “C” Day – Homework-
1. Complete the Take-home quiz – (Stiochiometry 4c)
The Blue team and the Orange team should have handed this in class today!
The Red team and Green Team will hand in class Thursday (tomorrow).
2. Complete the Golden Arches (Stiochiometry 4a – Precipitation – limiting reagent – quiz.pdf) quiz
The Red team and Green Team will hand in class Thursday (tomorrow).
The Blue team and the Orange team will hand this in Friday.
3. Lab 8 – conclusion writing – Lab 8 due Friday!
End of Wednesday..
10/29 – Thursday- “D” Day – period 2,3 (Lab) – I 2(B,D) 3(D) AP CHEMISTRY
– period 2,3 (Lab) – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 4 – I 3(B) 4(B,D) AP CHEMISTRY
-period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
The blue team and the orange team are on remote today. Please move to the remote instruction page.
Period 2, Period 4:
1. Collect Take home quiz – (Stiochiometry 4a – Golden arches quiz)
2. Review both quizzes.
3. Started Test (pages 1 – 4) in class.
Period 3
1. Continue working on test 2 –
2. Last 15 minutes
Lab 9 – Analysis of Carbonates- Determination of sodium carbonate or sodium hydrogen carbonate
baking soda washing soda
Added HCL on Sample A or Sample B
Evaporation of water to obtain mass of product (NaCl)
Today’s Class Lesson instead of recorded Zoom:
10/29 – Thursday – “D” Day – Homework –
1. PART 1 of the Test 2.
Due in class Monday for the Blue and Orange Teams..
2. Lab 8 is due!
10/30 – Friday “A” Day – period 2,3 (Lab) – I 2(A,C) 3(A) AP CHEMISTRY
–period 2,3 (Lab) – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 4 – I 3(C) 4(A,C) AP CHEMISTRY
-period 4 – R 3(C) 4(A,C) REMOTE INSTRUCTION
The Red team and the Green team are remote today. Please move to the Remote instruction page.
Period 2, Period 4:
Halloween Lesson –
1. Review of the 4a Quiz – Golden arches
2. Continue with Test 2 – (Both parts of the test are due Tuesday November 3rd in class for BLUE and Orange)
a) If you were unable to print Part 1 of test yesterday at home, please transfer you work to the blank test that I
I will give today or staple your work to the hardcopies. No work. No credit!
b) if you are done with part 1 (pages 1 – 4) you can hand them in and begin Part 2. You do not have to hand in
Part 1 today. You will leave today with hard copies of Part 2.
Period 3 (Lab):
1. Continue working on your test.
2. Last 15 minutes of period 3
Lab 9 – Analysis of Carbonates- Determination of sodium carbonate or sodium hydrogen carbonate
baking soda washing soda
Added HCL on Sample A or Sample B
Evaporation of water to obtain mass of product (NaCl)
Today’s Class lesson –
110/30 – Friday “A” Day Homework:
1. Please continue working on Test 2. Please note the due dates below!
BLUE and Orange teams: Both parts of the test are due Tuesday November 3rd in class.
Red and Green teams: Pages 1 – 6 are due Monday November 2nd in class.
The rest of the test will be due Wednesday, November 4th.
FULL REMOTE STUDENTS: BOTH PARTS ARE DUE WEDNESDAY, NOVEMBER 4TH!
There will be no class time awarded beyond Monday for the test.
End of Friday and week 8!
HAPPY HALLOWEEN LESSON:
PUMKIN STOICHIOMETRY –
PUMPKIN STOICHIOMETRY SLOW- MO –