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Archive – Q2 week 7 – 20 – 21

Week of 1/4 – 1/8 – Please Refresh every time you open– this page is changing often!

 

The 4 day – A, B, C, D cycle looks like this:
                                                       Day                               Period
                                                                           2                       3                       4       
                
                                   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
 
         Monday:              In class:          D               Lab                   Lab             Single Class
                                   Remote:                           Lab                   Lab              Single Class
                 
 
This weeks 5 day Schedule: 1
 
1/4  – Monday – “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
 
1/5  – Tuesday “A” Day – period 2,3 (Lab) –     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
1/6  – Wednesday  “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
 
1/7  –  Thursday –  “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
 
1/8  –  Friday-  “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

1/4  – Monday – “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
 Happy New Year!  
 
I hope everyone enjoyed your break. Unfortunately one of my family members tested positive so I am quarantined and now everyone is distance learning in my classes.
 
This is why there is no Remote Instruction Page this week and probably next.  I am very frustrated but I will do everything I can to keep us moving forward.  Not the what I planned but life is about adjustments. 
 
ZOOM Meeting Info for all classes:
Topic: AP Chemistry – 1.04 – periods 2,3,4
Time: Jan 4, 2021 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/88296532294?pwd=eExiZ2xNMms1d1pJM3ZMK3hkSnB2dz09
Meeting ID: 882 9653 2294
Passcode: HEu4Ck
One tap mobile
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Period 2, 4 – Both Red and Blue teams.  I know the Red team is in school but you need to log into the Zoom meeting along with the Remote team (Red).
 
I will lecture through zoom for students in class and out of class.  I will record it.
 
1.  Error analysis of Lab 16:   A = abc
2. Connections –  notes in Gas Laws
In Lab 16 – I added nitric acid to the brass (substitutional alloys) to dissolve both the Cu and the Zn.
 
Notice in the video the Brown Gas that was released as a product of the reduction of the nitrate ion (oxidizing agent).  Notice the green solution of the dissolved Cu ions.  When we ran the copper solution in the spectrophotometer the solution was blue but the result of the reaction of Cu and Nitric acid was a green solution?
 
 
In the picture of a demo below  I would of done in class I added water to a solution of CuCl .   The reason for the initial green solution is that the copper makes a complex with Cl ions as the ligand.  The Cl ion causes a different sized energy gap than if water is the ligand.  This is the reason for the initial green color as there is so much more Cl ions that water initially.  AS more water is added the water becomes the ligand and the energy gap changes so that a blue color results.
 

Connections:
In how many reactions that we witnessed or discussed in class up to this point did we generate a gas?
Did we generate a gas in electrolytic cells?  Did we split water using an electrolytic cell?
I did this demo in class.
 

Could we use the volumes measured gas generating reactions to do stoichiometry?  

            
            1. determine the limiting reagent
            2. Determine the amount of the reagents ( amount of active ingredients, % by mass )
            3. Determine the empirical formula? (mole ratios of atoms)
            4. identify the compound (molecular mass)
            5. Determine the Amperage needed to power this non-spontaneous reaction?
 
What does the amount of the gases generated above tell use about the chemical formula of water?
 
I conveniently dismissed the amount of gas generated in all of our reactions till NOW!  What labs did we do that generated gases that we could used for stoichiometry?
 
How about the last one?
 
Lab 16 oxidation of Cu and Zinc in brass:

 

Could we have measured the amount of NO2 gas collected and through stoichiometry determined the amount of copper in the brass, skipping the spectrophotometer entirely?
 
 
3. Gas Laws begin– measuring gas pressure all started with the story of Torricelli
 
                        He developed the concept of manometer to solve the problem of the water well in Tuscany Italy.
                            
A water well that brought water to the city state of Tuscany was recently moved inside the city walls, which had a higher elevation than where it once stood.  The well’s hand crank could not deliver any water when it was in the cities walls but worked outside the city states wall.
 
                   By solving this problem he developed the first way to measure and quantify pressure.
 
Pressure intro Presentation: Torricelli – discovered and used first manometer!
(we started at on slide 27..we were not crazy and did not start in order!)

Pressure intro

Period 3 – 
 
lecture – Story of Torricelli  continues – Manometers introduction with worksheet: 
 
TH\his is the full lecture that would continue into period 3.
The manometer demo I would of done in class:
Manometer demonstration:
 
                     A) Classwork/homework begin
 
Gas Law worksheet 1 – Manometers.pdf
View Download 
Gas Law worksheet 1 key – manometers.pdf
View Download 
1/4  – Monday – “D” Day – Homework
    
Orange and Green Teams: Please complete #1 and #2 .
 
1. Please watch the lecture lecture – Story of Torricelli  continues – 
    Manometers introduction with worksheet: 
 
Please start at 28:20 and follow along with the worksheet below to complete manometer (non word problems).
Gas Law worksheet 1 – Manometers.pdf
View Download 
Gas Law worksheet 1 key – manometers.pdf
View Download 
 
The focus is about how to solve a manometer problem.
 
The Story of Torricelli  continues ( from 28:20 TILL FINNISHED) 
Today’s Lecture: Story of Torricelli  (not from this year)- 
 
RED and BLUE Team:  Please complete #2 only.
 
2.  Complete the word problems in the manometer worksheet.  
      The lecture below will help you work through the word problems.  
      Please try to see that these are really manometer problems.
 
Also please complete the manometers at the end of the worksheet. I will will review if you have trouble. Make sure you recognize whether the manometer is open tube or not.
      
    You can also use the key below to review these problems.

Manometer worksheet that review the word problems:

 
Gas Law worksheet 1 – Manometers.pdf
View Download 
Gas Law worksheet 1 key – manometers.pdf
View Download 
 
3. Review the Volumetric Titration Test –  I have graded and emailed everyone their Volumetric Test
Volumetric Redox and Spectrophotometry Test.pdf
Volumetric Redox and Spectrophotometry Test Key 2021 p.pdf
View Download
 
End of Monday..

1/5  – Tuesday “A” Day – period 2,3 (Lab) –     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
ZOOM Meeting Info for all classes:
Topic: AP Chemistry – 1.05 – Periods 2,3,4
Time: Jan 5, 2021 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/84369478887?pwd=L0lSTjV2alp5YThLMUJiUnNjVGc2QT09
Meeting ID: 843 6947 8887
Passcode: y0HdK0
One tap mobile
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Period 2, 
 
1. Review the Manometer Demo with video:
 
Manometer demonstration:
 
 
2.  Complete the manometer worksheet – last manometers and word problem review
 
Gas Law worksheet 1 key – manometers.pdf
View Download 
 
 
3. Static vs. Dynamic Gas Law Derivations-  first of many!
 
        A)  the Ideal Gas Law formula:    PV = nRT 
                       (Static Gas Law formula
 
        B) the Combined Gas Law formula:      P1V1     =     P2V2
                    (Dynamic Gas Law formula                          _____                            _____
                                                                                                             T1                    T2
               
Presentation with animations that I used to explain the variables that affect gases:

Gas Law Derivation

Period 3:  Classwork / homework begins:
 
Gas Law worksheet 1 -.pdf
View Download
 
Gas Law worksheet 1 key -.pdf
View Download
 
Period 4:
 
1. Static vs. Dynamic Gas Law Derivations-  first of many!
 
        A)  the Ideal Gas Law formula:    PV = nRT 
                       (Static Gas Law formula
 
        B) the Combined Gas Law formula:      P1V1     =     P2V2
                    (Dynamic Gas Law formula                          _____                            _____
                                                                                                             T1    
 
        1) Graph of Boyles Law discussion      
        2) R is a slope
 
 
We will go over manometers tomorrow in double period.
 
 
1/5  – Tuesday “A” Day Homework:
 
1.  a) . Please watch the last few minutes (from 13:50 on) of the gas law derivation posted below
            (In both classes I did not quite finish it with Combined Gas law formula.)
 
       b) Complete Gas Law worksheet 4.pdf and review with the key.
             – now you are applying the 2 gas law equations, Do I use the dynamic or static? 
    
Gas Law worksheet 1 -.pdf
View Download
 
Gas Law worksheet 1 key -.pdf
View Download
2. complete the Gas Law worksheet 2 worksheet and review with the key or lecture below.
Gas Law worksheet 2.pdf
View Download
Gas Law worksheet 2 key.pdf

View Download 

Derivation of Ideal Gas Law / combined gas law – Formula review lecture:
Lecture that reviews Gas Law worksheet 2. pdf:
 
It was originally called Gas law worksheet 4…
End of Tuesday…

1/6  – Wednesday  “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
ZOOM Meeting Info for all classes:
Topic: AP Chemistry – 01.06 – Periods 2,3,4
Time: Jan 6, 2021 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/89915446952?pwd=NmhqdmUyVE11TlJKempuOWVOYnE4UT09
Meeting ID: 899 1544 6952
Passcode: TETq9d
One tap mobile
+16465588656,,89915446952#,,,,*702443# US (New York)
 
 
Period 2 – 
 
1.  Review the Homework – 
 
        a) identify the formula used  – Last night’s Homework review – When to use Dynamic or Static
        b) cancelling the correct units
 
        c) Notice that 22.4 L = 1 mole in question 4
        d) relationships in last question of second worksheet
             Question 4 – of Gas Law worksheet 2.pdf
 
2. Review of variable relationships  from derivation – 
 
        – relationship only work when other variables are held constant
 
            – Destroy Boyles Law with liquid nitrogen-
 
 
        Boyles Law: 
– Destroy Boyles Law with liquid nitrogen-
 
3.  Started the homework, gas law regents level dittos 0910.pdf
 
New pressure – unit Kilo pascals – from pressure intro presentation
 
gas law regents level dittos 0910.pdf
View Download
 
gas law regents level dittos 0910 key.pdf
View Download
Period 3,4 – 
 
1. Review the Manometer Demo with video:
 
Manometer demonstration:
 
 
2.  Review the manometer worksheet – last manometers and word problem review
 
Gas Law worksheet 1 key – manometers.pdf
View Download 
 
 
3.   Review the last nights Homework – 
 
        a) identify the formula used  – Last night’s Homework review – When to use Dynamic or Static
        b) cancelling the correct units
 
        c) Notice that 22.4 L = 1 mole in question 4
        d) relationships in last question of second worksheet
             Question 4 – of Gas Law worksheet 2.pdf
 
4. Review of variable relationships  from derivation – 
 
        – relationship only work when other variables are held constant
 
 
5.  Started the homework, gas law regents level dittos 0910.pdf

 

            New pressure – unit Kilo pascals – from pressure intro presentation
1/6  – Wednesday  “B” Day Homework:
 
1. Please complete following worksheet and review with the key.
 
This might be collected Monday!
 
You may wonder why we are doing this worksheet now.  It will makes sense when you complete it
Intro Electrolytic Cells worksheet 3.pdf
View Download
Intro Electrolytic Cells worksheet 3 key p.pdf
View Download
 
 
2.  Please complete the gas law regents level dittos 0910.pdf worksheet and review with the key.
      We started this in class and remember to use you understanding of the relationships of the ga  
      variables to check if the answer makes sense.
 
gas law regents level dittos 0910.pdf
View Download
 
gas law regents level dittos 0910 key.pdf
View Download
                 
End of Wednesday..

                               
Pressure intro Presentation:

Pressure intro


1/7  –  Thursday –  “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
ZOOM Meeting Info for all classes:
Topic: AP Chemistry – 01.07 Period 7,8,9
Time: Jan 7, 2021 08:00 AM Eastern Time (US and Canada)
 
Join Zoom Meeting
https://us02web.zoom.us/j/85843411426?pwd=VmVNeGh5MjU3YmdESTdlZ2p5YmdxQT09
 
Meeting ID: 858 4341 1426
Passcode: pBq98p
One tap mobile
+16465588656,,85843411426#,,,,*500959# US (New York)
 
Period 2,3:
 
 
1.  Homework review
gas law regents level dittos 0910 key.pdf
View Download
Intro Electrolytic Cells worksheet 3 key p.pdf
View Download
2. Classwork Form complete – 
 

Gas Law RAT #1 Quiz

Period 4:
 
 
1. New Derivation of Density and Molecular Mass of a Gas
 
 
2. Start your homework below:
 
 
1/7  –  Thursday –  “C” Day  Homework- 
 
Blue and Red Teams: Please complete #1 and #2
 

1. Watch the 

Derivation of Molecular Mass / density gas law formula Lecture below:
    Please take notes on this as you will have a quiz Monday on both derivations we did this week.
                                                                                                               
 
 
Orange and Green teams please complete only #2 below:
 
2. Complete the Gas Law Stoichiometry Density 2009 worksheet below and review with the key below.
      
 
Gas Law Stiochiometry Density – 2009.pdf
 
Gas Law Stiochiometry Density – 2009 AP Key.pdf
View Download
 
Hmm…we may now be ready to start some gas law labs!!!
End of Thursday!

1/8  –  Friday-  “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
ZOOM Meeting Info for all classes:
Topic: AP Chemistry – 01.08 Periods 2,3,4
Time: Jan 8, 2021 08:00 AM Eastern Time (US and Canada)
 
Join Zoom Meeting
https://us02web.zoom.us/j/82993917944?pwd=b0Fkbi9oRXd5U0Q3bkdhZnJGWXhtdz09
 
Meeting ID: 829 9391 7944
Passcode: AD0ru4
One tap mobile
+16465588656,,82993917944#,,,,*176029# US (New York)
Period 2, Period 4:
 
1. Homework Review –  Calculate density of Air using derived density formula
 
Gas Law Stoichiometry Density – 2009 AP Key.pdf

View Download

 
2. Lab 17 – Review – Using the homework concepts we will review how we will complete Lab 17 starting Monday.
 
    a) complete the procedure of informal lab
 

Lab 17 – Molecular Mass of an unknown gas.pdf
View Download

Period 3:
 
Virtual Demo activity:
 
1.  Syringe and the manometer:
 
2.  Egg in the bottle and Egg out the bottle (match) :
 
3.  Egg in the bottle and Egg out of the bottle (liquid nitrogen) :
4. Crush the can Demo:

 

Form for todays Virtual activity:

 

Virtual Demo Form –

 

1/8  –  Friday-  “D” Day Homework:
 
1.  Complete the Virtual Demo activity posted in period 3 above for the 
     Green Team and the Orange team.
 
2. Study for a Derivation Quiz Monday – 
      You will asked to derive:
 
        A) the Ideal Gas Law formula:    PV = nRT 
        
        B) the Combined Gas Law formula:      P1V1     =     P2V2
                                                                                                           _____                            _____
                                                                                                             T1                    T2
                
        
        C) The Molecular Mass formula:                       M = dRT
                                                                                                           P
 
 
        D) The density formula (from the above formula)   d = (solve from above)
 
Here is the quiz:
Gas Law Equations Derivation Quiz.pdf
View Download
 
Derivation of Ideal Gas Law / combined gas law – Formula review lecture:
 
Derivation of Molecular Mass and density equations from ideal gas law:                                                                    
 
End of week 7..

NOT Updated Beyond this Point!
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

_________________________________________________________________________________________________________________________

1/6 – Thursday – A Day – B Day – 2, 3b/4 Lab 

Main focus –                                                                                                                                                         
                                                  

    a) To Derive the standard unit of Pressure = Pascals

    b) To Derive the density and Molecular mass of a gas 

Period 2:  

1New pressure – unit Kilo pascals – derivation from pressure intro presentation

2.  Boyles Law demo with Marshmallows/ Final relationship with 1st derivation – (make graph)

        a) Boyles Law destroyed with liquid nitrogen – gauge pressure – Bourdon pressure gauge = manometer! , Cracking knuckles

3. New Derivation of Density and Molecular Mass of a Gas

Period 4: 

1.  Same as above except will add, tornado tubes, water cardboard, large Flask, egg demos.

                                                                                                          

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1/6 – Thursday Homework: – 

                                                                                                                                                                                                                               
1. Complete the Gas Law Stoichiometry Density 2009 worksheet below and review with the key below. 1
     
Gas Law Stiochiometry Density – 2009.pdf
 
Gas Law Stiochiometry Density – 2009 AP Key.pdf
View Download

                       

2.  Please study the Ideal Gas Law Derivation and the Molecular mass/Density Derivation for tomorrow’s Quiz.  I have posted both derivation video below for your review.                                                                                                     

Ideal Gas Law Derivation Video:

 

End Of Monday!!!

Molecular Mass and Density Derivation Video:

 

End Of Tuesday!