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Archive – week 7 – 20 – 21

Week of 10/19 – 10/23
 
*Please REFRESH this Page every time you view!!!
 
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 4 day Schedule:
 
10/19 – 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
 
10/20  – 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
 
10/21  –  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
 
10/22  – 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
 
10/23  – 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
 

10/19 – 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
 
The Blue and Orange team are Remote today. Please move to the Remote Instruction page.
 
period 2, period 4: 
 
1. Why we need a mole notes:  H + Cl –> HCl 
We can use a scale to count!
 
2.  Why do we need to balance chemical reactions? What is the significance!
      We need to make good cake!
 
Flaming Flask Demo – 
Cyclohexane combusts more completely when poured out because the ratio of 
cyclohexane to oxygen is 1 : 9. We get those ratios when we balance.
That means 9 O2 molecules per 1 C6H12  is needed to maximize the reaction.  The cyclohexane was not getting the right ratio in the flask but achieved the right ratio when it was poured out.
 
1 C6H12  (l)  +    9 O2 (g)    —–>   6 CO(g)   +   H2O (g)
 
Law of Conservation of Mass Demonstrations:

Law of Conservation of Mass

Last year Demo (period 3/4 class) – Thanks Brandon!
 
              H2 (g)  + 1 O2 (g)  —->  2 H2O (g)   +    Energy
 
Which balloon made the best cake?
 
LGI LAST YEAR!
100% Hydrogen Balloon:
66% Hydrogen with 33% oxygen (2 : 1 ration of Hydrogen to Oxygen):
 
Older Videos that compare…
Hydrogen and Oxygen demo:
TODAY’s Demos:
 
Period 2:
 


Period 4:


period 3 (Lab)
 
Lab 6 – Lab 6 – Determination of Empirical formula of a Hydrate –
 

LAB 6 – Empirical Formula analysis of Hydrate.pdf

 
 
NOTES*Lesson for Lab 6 – 
 
*Determine the chemical formula of a hydrate:   
 

Because of the conservation of mass by Antoine Levassuer, the mass of  water that is released from the crystal (hydrate) is the same mass that was is in the crystal.  THus the moles of water lost is the water that are in the crystal (in the formula ) .  

 
Formulas of compounds are fixed! (THanks Joe Proust – Law of definite proportions)
 
Once we determine the mass of water lost, we at the same time determine the mass of remaining part of the salt called the annhydrate.  Convert grams of both parts of the hydrate to moles  and then get a ratio of how many (moles) by dividing by the lowest number of moles.  That ratio is what we will use for the fixed formula!
Lab 7 : copper Iodine setup – we will need a couple of days for it to react.
 
Today’s recorded Zoom Stream:
 
10/19 – Monday – “D” Day – Homework:
 
1. Please complete the take-home quiz ON the worksheet that was given out today or posted below:
   
Analytical quiz 1 – Hydrate, precipitation, and Stioch.pdf
View Download
 
2. Complete the Form below that will allow to place your answers into the form below.  The form will be on auto-grade to grade your responses.  You may submit as many as 3 times as you would like BEFORE 9:00 pm.  After 9:00pm you will be given 1 more response to submit.  The form after 9:00 pm will not be auto-grade.  I will send out the final grade with a hand written key at 10:00 pm.
 
Form: Analytical Chemistry Quiz Take – home.
 
YOU HAVE A MAX OF 3 SUBMISSIONS BEFORE 9:00 PM!
 

Analytical Chemistry Quiz 1 Form – 2021

End of Monday…

10/20  – 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
 
The red and green team are remote. Please move to the remote instruction page.
 
period 2, period 4:
 
1. Homework – Analytical Quiz 1 Form review with key.
 
2. Hydrogen balloon explosion analysis –
 
3. Pringles demonstration 
 
4.  Conservation of Mass demonstration – Challenger and Hindenburg 
 
Law of Conservation of Mass :

Law of Conservation of Mass

period 3 (Lab):
1.  Complete calculations for Lab 6 – empirical formula of a a hydrate.
 
2.  Lab 7 – Empirical formula of a copper iodide – note-taking and Lab setup.
 
Today’s Pringles can Demo :
                             
Today’s recorded Zoom Stream – period 2:    
 
                         
Today’s recorded Zoom Stream – period 4:
 
10/20  – Tuesday  “A” Day Homework:
 
1. Lab 6 – complete lab calculations – There is no conclusion for this lab!
This is for the following teams: 
 
RED TEAMBLUE  TEAMGREEN TEAM
                 
2.  Begin the formal write-up of Lab 7 with Google Doc that I will share with you. Everyone has a link to their individual google doc that YOU must use to complete this formal lab write-up.
 
EVERYONE CAN start this by completing the Objective,BACKGROUND, and Procedure tonight!
 
Objective:  To obtain the (empirical) formula of copper Iodide.  Remember that copper has 2 different valence quantities as it can be Cu or  Cu+2  but regardless we are doing a historical Analytical Chemistry experiment WHERE we do not know what the formulas of compounds are!
 
To determine the percent yield of copper iodide, (once we determine the empirical formula).
 
Begin the write-up of your first formal lab – Lab 7 – Determination of the empirical formula of copper iodide.
 
WRITE A BACKGROUND
1) on the properties of Copper metal,  iodine,  and differences in structure and reactivity or anything that might interest you.  You could also discuss the product but again you do not know its formula.
 
2) You may also want to discuss things that you already learned.  Will this be a redox reaction?  Is it spontaneous? 
      What is the history of stoichiometry, mole concept, analytical chemistry?
 
3) This part is open-ended but you must write this Background in a way that it focuses your discussion toward your objective.  You are in a way writing this background as prosecuting attorney would present their  “opening statement” . You can use any interesting information that you find (You must list your sources as the last page) in your discussion but you must focus it at the end toward the objective at the end.)
You should start with a Title Page:
 
                                                                                        Lab Title
 
 
 
                                                                                                                            Student Name
                                                                                                                                   Class
                                                                                                                                    Date
Background Page (label the page as such):
 
(at the bottom of this page write the objective.)
                                                                                                                Background:
 
                                                                                            Blahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
                                                                                                 hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
                                                                                                 hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
                                                                                            hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
                                                                                                 hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
                                                                                                 hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
                                                                                                 hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
 
                                                                                             Objective:
 
 
Write a Procedure Page:
 
                                                                                Procedure:
 
                                                                                    1.  Blahhhhhhhhhhhhhhhhhhhhhhh
 
                                                                                                   2.  Blahhhhhhhhhhhhhhhhhhhhhhh
 
                                                                                                   3.   Blahhhhhhhhhhhhhhhhhhhhhhh
 
Write a Procedure:
What did you do to accomplish your objectives,  Can another researcher follow these steps and repeat the experiment sucessfully?
 
This section should have each step bulleted!!!  You will need to use your notes to figure what we will do in this lab.
The best way to write this so you have a plan of action in the next Lab period is to think how you should mass out the contents of the reaction vessel so that you figure out as a lab group how you go about determining the 
               
                 i) mass of the copper reacted.
                ii) and the mass of iodine reacted.
 
Isn’t this what we need to get the chemical formula????
 
Write a Data Page:
 
Using your objectives, and procedure as your guide you should be able to write a data table of all measured values AND calculated values that is required to complete your objectives. 
 
Add Calculations Page to show all Calculations including All chemical reactions:
 
You can do this on a piece of paper by hand and then take a picture with your phone and insert it into your google doc.
Add a Sources Page
 
List all websites that you used in your background or anywhere else in your Lab.  You do not need footnotes or use any format like APA. Just list your sources at the end
 
 
We will complete the RESULTS, and CONCLUSION pages once you collect the final data.
You will complete this write-up with a google doc that I will link to you using the gmail account I have on file for you. There are no exceptions! In this way I can monitor your progress and give you comments.  
I will not accept links to your own google doc!
 
Remember to have access to the linked google doc you will need to logged into google in your browser with the google account (gmail) that you create.
 
The Formal Lab Write- up must follow the basic format listed in the Lab report Rubric page.  There is an example posted there.  I am also posting a short video (on the basics of the Lab)
End of Tuesday..

10/21  –  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
                                          
The Blue Team and the Orange Team are on remote today. Please move to the Remote Instruction Page.
 
Period 2: Period 4
 
1.  Law of Conservation of Mass Presentation:
 
2. Model the stoichiometry problem (last problem in the Monday’s Form).
 
red team only:
3. Measure the mass of the copper with ionic product (copper iodine) and mass of cleaned copper to determine the mass of the copper and iodine reacted.
 
We placed copper in erlenmeyer flasks with iodine crystals Monday.
 
Law of Conservation of Mass presentation :

Law of Conservation of Mass

period 3 (Lab):
 
1.  Lab 7  – Empirical formula of copper iodide – discussion
 
    a) measure initial mass of copper and start the redox reaction
 
    b) place in hot water bath plate for gentle heating.
 
    c) measure the copper product and cleaned copper.
Today’s recorded Zoom Stream – period 2:  
Today’s recorded Zoom Stream – period 3,4:  
 
10/21 – Wednesday  Homework – 
 
1.  Lab 6 – Write-up – keep working on this 
 
All teams except for 1 (blue team) has their data so they can or should have their lab calculations done.
Blue team tomorrow will have their data.
 
I will post a video today that will review the lab and all its calculations.   
 
2. Please View Lecture 1.5 below on Molar stoichiometry 
3. Complete the worksheet and review with Key
Stiochiometry 3 – Molarity limiting reagent.pdf
View Download
 
Stiochiometry 3 – Molarity limiting reagent Key.pdf
View Download
End of Wednesday.

10/22  – 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
The Red team and the Green team are remote today. Please move to the Remote Instruction Page.
Period 2, Period 3: Class lecture – These periods are streamed.
 
1.  Limiting reagent Demo
2.  Chart method of limiting reagent problems/Classwork
Redo of Monday’s homework with moles and chart.
 
Classwork/demo:
Limiting reagent intro demo new worksheet.pdf
 
3. Lab 7 – data collection- blue team only – last 5  – 10 minutes
 
    a) Mass out copper & Product
    b) Mass out cleaned and dry copper (Final mass of copper)
 
– along with the initial mass of the copper you took 2 days ago you have all the data you need to complete the calculations.
period 4 (LAB):
 
1.  Please take out your measurements from the lab yesterday from the virtual lab that you participated in yesterday.  We will review this lab using the Student B video below:
 


2.  Complete all calculations and data analysis.
 
Lab 7 – Empirical Analysis of Copper Iodine
 
FIND YOUR FLASK THAT YOU PUT Cu (s) and I2(s) into.
 
    a) Determine how you should mass out the contents of the reaction vessel so that you
         figure out as a lab group how you should go about determining the 
               
                 i) mass of the copper reacted.
                ii) and the mass of iodine reacted.
 
*The electric balances with (piezo electric crystals) are on every other lab table.
    
     b)  Place the stopper back on your Erlenmeyer flask so that the Iodine crystals do not sublime AWAY!
          Place your stoppered flask and unreacted copper in the cart where designated.
    c)  If you are handling the copper iodine (flaky green compound) you should put on gloves.  Everyone should be              in goggles.  I have provided plastic weighing boats for the compound if needed along with spatulas for            
          scraping.  Use paper towels to dry the unreacted copper if necessary. Place the copper Iodine in   
          the proper waste container that is marked in the cart when you are done with your measurements.
 
    d) Include lines in your data table that represent what you measured to GET the grams of copper reacted and      
         the grams of iodine reacted.
 
    e)  Write your procedure that includes what you did to get the grams of the copper reacted and iodine reacted.
 
    f)  Calculate the Empirical Formula of copper Iodide.
 
    g) Write a balanced chemical reaction for the synthesis reaction of copper iodide based on your empirical  
        formula.
 
     h)  Calculate the theoretical (pencil and paper math) grams of copper iodide based on your empirical  
        formula.
      i) Calculate the percent yield.
 
     j) Design and implement a group interpretive dance.
 
_________
 
Today’s Demo: Limiting reagent of ethanol and oxygen.
 
Today’s Limiting Reagent Lesson (last year but same lesson):
 
 
Today’s recorded Zoom Stream – period 2:  
Today’s recorded Zoom Stream – period 3,4:  
10/22  – Thursday – “C” Day – Homework
1. Lab 7 write-up!
 
Tuesday night’s homework was about a concept that you could add to your discussion/conclusion.
 
Remember I grade these Labs holistically.  Meaning if they ooze with effort and you make a mistake then I will take off less points than someone who makes the same mistake but does not provide the same effort.
 
Lab  DRAFT DUE Monday!
I will read and add comments and then you give you an chance to make changes BEFORE I GRADE!
 
Lab write-up requirements are posted at the end of this page. You are completing this lab ON THE SHARED DOC THAT I GIVE YOU.  No exceptions!!! 
 
2. Complete the backside (questions 3 and 4 ONLY) of the  
Limiting reagent intro demo new worksheet.pdf with the video posted below.  Start the video at 16:26 as you are not held accountable to questions 1 and 2 yet. We will be using the concept of limiting reagent in different type of AP Multiple Choice Problems. 
 
Back side (questions 3 and 4) of the Classwork worksheet today:
Limiting reagent intro demo new worksheet.pdf
3. Please complete Stiochiometry 3 – ICE Table Molarity Salsa.pdf  which is really the second problem the homework Last night (Stiochiometry 3 – Molarity limiting reagent.pdf).  So please redo that limiting reagent problem using the ICE Table method. Don’t be mad that this way is simpler!!!  Remember that moles will be calculated through Molarity (M * V(in Liters) = moles.
 
                                                                     Molarity ( mole / Liter )   X   Volume (Liter)  = mole
 
Stiochiometry 3 – ICE Table Molarity Salsa.pdf
View Download
 
4. Please review with the key that will be posted.  You will be getting the same answers as Monday night but by DOING IT A DIFFERENT WAY!  It is all about understanding the process NOT just the answers here.
 
Stiochiometry 3 – ICE Table Molarity Salsa key BEST p.pdf
View Download
 
5.  Complete the Short Form from a Tall Teacher below:  
      If you do not follow my order above and do this first you will find this difficult.  I have a plan!         
      Please Trust it!
 
Limiting Reagent Short Form:
 

Limiting Reagent Form 2021

End of  Thursday!

10/23  – 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
 
The Blue Team and the Orange Team are Remote today. Please move the remote instruction page.
Period 2, Period 4
 
1. Lab 7 – Copper Iodide Lab –  Error analysis – using the Ice table
 
2.  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
View Download
 
3.  Discussion of Bernouli’s Principle that explains how the aspirator creates low pressure.
 
Video for Lab 8 – introduction:
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 Monday.
 
Period 3 (Lab):
 
1. 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.
 
Today’s recorded Zoom Stream – period 2:  
 
Today’s recorded Zoom Stream – period 4:  
10/23 –  Friday – Weekend Homework:  *Quiz MONDAY ..Hints Below!!!
1:  Please complete – Stoichiometry 4 – Precipitation – limiting reagent .pdf side one with me with the video below and then complete the side 2 with the key or with second video.
 
Stoichiometry 4 – Precipitation – limiting reagent .pdf
View Download
Stiochiometry 4 – Precipitation – limiting reagent Key p.pdf
View Download
Stoichiometry 4 – Precipitation – limiting reagent .pdf – Problem 1 (1st side):
Your quiz is based on these problems!


Stoichiometry 4 – Precipitation – limiting reagent .pdf – Problem 2 (2nd side):
Your quiz is based on these problems!
*Next week – TEST 2 – Analytical Chemistry Topics – Maybe Thursday.
    Please see the Test 2 – Review Page for your studying desires.
 
Long Range Planning:
 
 Test 2 may be next Friday on Analytical Chemistry.  Everything we have done SINCE the Electrochemistry (which includes the Labs) .. I should have all labs back to you Monday.
 
Test Topics:
 
 Worksheet   Worksheet Key   Tutorial Videos
 Analytical Chemistry I – determining chemical formulas.pdf
View Download
 Analytical Chemistry I KEY- determining chemical formulas.pdf
View Download

 http://youtube.com/watch?v=8DT4B3sbdyA (#1)

http://youtube.com/watch?v=FUT45QEu13w   (#3)

 empiri&molec ditto 

hydrate combination.pdf
View Download
 

 empiri&molec ditto 

hydrate combination KEY p.pdf
View Download
 (#1)
 Analytical Chemistry II – Mol,Dilution, precipitation analysis.pdf
View Download 
 Analytical Chemistry II KEY NEW – Mol,Dilution, precipitation analysis.pdf
View Download 

 http://youtube.com/watch?v=PnALmH0JxpE   (#1)

http://youtube.com/watch?v=ZmQUO3_G-hA  (#4,5)

 Stiochiometry 1 – balance yield.pdf
View Download
 Stiochiometry 1 – balance yield key.pdf
View Download
 http://youtube.com/watch?v=Ihun8MhGH4o (#1, #3)
 Stiochiometry 2 – limiting reageant -.pdf
View Download
 Stiochiometry 2 – limiting reageant – Key.pdf
View Download
http://youtube.com/watch?v=MVZyfcd_1Tg  (#1)
 Stiochiometry 3 – Molarity limiting reagent.pdf
View Download
 Stiochiometry 3 – Molarity limiting reagent Key.pdf
View Download
 http://youtube.com/watch?v=Li3KbNoPEOs   (#1)

 Limiting reagent intro demo new worksheet.pdf

   https://www.youtube.com/watch?v=oGxInhA4VMU&feature=youtu.be
Lab 5 –  percent by mass of water in a hydrate  
Lab 6 –   empirical formula of a hydrate  
Lab 7 – Copper iodide  empirical formula of copper iodide

Analytic quiz wed

Next week…


 
End of week 7!
 

LAB WRITE- UP REQUIREMENTS:
 
Weekend HW:  : LAB 2   HERE IS AN EXAMPLE (link to a AP student’s lab last year)
 
Using the general rubric below and the one explained in the Lab Report Rubric link I gave out I would like to see the following sections in your Lab write up.
 
There is another example posted in the Lab Report Rubric.  I am requiring these sections below to be titled and included in your lab report but you are making this lab your own.  Although we did the same data collection and experiment, you are to make your lab unique in the lab write-up.  You will spin this lab to your interests by writing a unique background that will cover a least a page single spaced or 2 pages double spaced.  Use this opportunity to research something about Plants or Light that may relate to your experiment.  This is something that you will bring back into your discussion in your conclusion.  This could really be anything related to your experiment or the Fast Plants BUT you must direct your discussion to your Question and then Hypothesis. 
 
1: Title Page – Your name, Date, Title of experiment
 
2:  Background – Your background is like a literary review of the topic in a published study. I am not asking you to write a term paper on the Fast Plant but I am asking you to write an essay on the ANYTHING that is remotely related to this investigation.  Develop your Background so that your discussion eventually LEADS to a Question that you will test with your Hypothesis.  Write it as a prosecutor would deliver their opening statement to set the stage for their argument. I know this is open ended but this is how you make this lab your own.  Do make this a cohesive piece of writing and you may probably need to investigate this information.  At the end of the lab I will ask for your resources, so make note of where you are gathering information. DO NOT MAKE THIS a bunch of unrelated ideas or facts.  I gave you some example below from past students of mine so take a look to get a feel of what I am asking. This part of your lab should be 1 page single spaced or 2 pages double spaced.
 
3:  Objectives/Hypothesis: We normally use objectives here instead of Hypothesis as we are trying to find      
                                                         something.
 
4.  Materials: List all chemicals, equipment and tools used.
 
5: Procedure:  Step by step instructions on how you would complete this experiment. Please bullet this section!
                                  A good procedure is one that another could easily follow to repeat the experiment successfully.
 
6:  Data:   Graphs, Data Tables, etc.
                    Please make a Data table, like the one’s you have had from my handout of other labs that include 
                    those values that you actually measure AND those that you calculate for.
 
                    * You need to pay close attention to units, significant figures , and precision of equipment.
 
                    * You should provide the actual ratios (non-rounded) to use in your error analysis.
 
7: Calculations and Chemical Formulas:   On a separate page, provide all calculations and chemical  
                                                                                        formulas that are pertinent to the lab.  You could do this neatly on 
                                                                                        piece of paper and then scan or take a picture with your phone and                                                                                         insert into the shared doc.  No separate piece of paper that is NOT                                                                                         inserted will be accepted.
            
           *Example: Your percent yield calculation requires a balanced chemical formula that will be determined                                        from your empirical formula of copper Iodide.
 
8: Results:  Summarize your data, but do not make conclusion statements. This will be a short section.  A    
                        couple sentences will usually suffice.  This summary will only report the most important information  
                        that coincides with the objectives written.  
 
                        In your lab conclusions, your first paragraph was really a results section.
 
9: Conclusion:  This section will be heavily scrutinized.  Here is where you get dirty with the data. What is the data inferring about copper iodide?  What are the implications or possibilities because of your outcomes.  What could be further investigated?  
If you get vague you will lose points. You must fully develop your points and support them with logic! Remember that many experiments are built from the conclusions of other labs.  This means your points in your discussion will not be facts but just very good possible explanations.  Another experiment would be needed to test the validity of these statements. However,  if you support your statements with solid logic from evidence collected in the lab then you are addressing all the possible implications from YOUR WORK or experiment.  In this point of your conclusion you will be MAKING A LEAP from your work based on data analysis to a POSSIBLE implication Chemically for copper iodide.  If you do this by tying the Background discussion with your discussion here it will result in very will impressive lab write – up! 
 
Please make sure your conclusion covers three basics:
 
            A:  DATA analysis:  complete detailed analysis of the the hard data collected.
                      This has nothing to do with error analysis!!! What does the data suggest? The   
                     data “suggests” or there is a possibility. Use the Results section and objectives as a guide                     here.  What was your formula?  Is it empirical? Molecular?  What is ratio represent                                chemically?  How strong is the evidence that your formula is what you think it is?
                     How does the percent yield support or not support your ratio here?
 
            B:   A LEAP:  You need to explain what the data means in terms of the chemistry of the compound. This                                             really the reason for the investigation.  Fully develop your thoughts based on your evidence.  
                                    Be logical and make your case as if you were a lawyer trying to convince a jury of your                                                     argument.
 
             C:  Error Analysis:  What are the possible limitations in your lab.  Every experiment has limitations. What    
                       were the limitations in this experiment. What could be done to narrow our approach to better the 
                        questions you laid out in this lab.  
 
                                    *Your guide here is your actual ratio and your percent yield!
 
* DO NOT MAKE comments that are not logical and are not supported by the evidence.  This is an area of conjecture and speculation so it cannot be wrong unless you do not fully develop your thoughts and support your statements with sound logic.  
 
 
10. Sources – Just give me web address of the sites that you got information from.

REMOTE INSTRUCTION:
10/19 – 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
 
The Blue and Orange team are Remote today.

AP Chemistry DAILY REMOTE INSTRUCTION ATTENDANCE

Zoom info for Period 2:
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Time: Oct 19, 2020 08:15 AM Eastern Time (US and Canada)
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Zoom info for Period 4 : 
Topic: AP Chemistry – 10/19 – period 4
Time: Oct 19, 2020 09:45 AM Eastern Time (US and Canada)
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period 2, period 4 – 
 
1. Why we need a mole notes:  H + Cl –> HCl 
We can use a scale to count!
 
2.  Why do we need to balance chemical reactions? What is the significance!
      We need to make good cake!
 
Flaming Flask Demo – 
Cyclohexane combusts more completely when poured out because the ratio of 
cyclohexane to oxygen is 1 : 9. We get those ratios when we balance.
That means 9 O2 molecules per 1 C6H12  is needed to maximize the reaction.  The cyclohexane was not getting the right ratio in the flask but achieved the right ratio when it was poured out.
 
1 C6H12  (l)  +    9 O2 (g)    —–>   6 CO(g)   +   H2O (g)
 
 
The water maker reaction:
 
              H2 (g)  + 1 O2 (g)  —->  2 H2O (g)   +    Energy

Law of Conservation of Mass

 
also for period 4 – you need to use the values in the lab video  
                                      below to complete the calculations for lab 6
                                      I took the “L” Friday. Sorry!
period 3 Lab:
 
Lab 6 – Lab 6 – Determination of Empirical formula of a Hydrate –
 

LAB 6 – Empirical Formula analysis of Hydrate.pdf

Your class (red team) will be collecting the data in class for this lab.
 
You will be  collect the data virtually below using the following video:
 
Please decide which crucible you will use, A or B and mark that in your lab.
 

Please move to the week seven page to view the homework:

0/20  – 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
 
The red and green team are remote. 
 
 
Zoom info for Period 2,3:
Topic: AP Chemistry – period 2,3
Time: Oct 20, 2020 08:15 AM Eastern Time (US and Canada)
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Zoom info for Period 4 : 
Topic: AP Chemistry – Period 4
Time: Oct 20, 2020 09:45 AM Eastern Time (US and Canada)
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period 2period 4:
1. Homework – Analytical Quiz 1 Form review with key.
 
2. Hydrogen balloon explosion analysis –
3. Pringles demonstration – If time permits!
 
4.  Conservation of Mass demonstration – Challenger and Hindenburg 
 
Law of Conservation of Mass :

Law of Conservation of Mass

period 3 (Lab): continue with zoom meeting..
1.  Complete calculations for Lab 6 – empirical formula of a a hydrate.
 
2.  Lab 7 – Empirical formula of a copper iodide – note-taking 
 
                   The red team set-up the lab yesterday.
Please move to the week 7 page to view the homework.

10/21  –  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
                                          
The Blue Team and the Orange Team are on remote today. 
 
 
Zoom info for Period 2:
Topic: AP Chem 10/21 – period 2
Time: Oct 21, 2020 08:15 AM Eastern Time (US and Canada)
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Zoom info for Period 3 : 
Topic: AP Chem 10/21 – period 4
Time: Oct 21, 2020 09:00 AM Eastern Time (US and Canada)
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Period 2Period 4 – Class lectures
 
1.  Law of Conservation of Mass Presentation:
 
2. Model the stoichiometry problem (last problem in the Monday’s Form).
 
red team only:
3. Measure the mass of the copper with ionic product (copper iodine) and mass of cleaned copper to determine the mass of the copper and iodine reacted.
 
We placed copper in erlenmeyer flasks with iodine crystals Monday.
 
Law of Conservation of Mass presentation :

Law of Conservation of Mass

period 3 (Lab) and Full Remote Students:
 
1.  Lab 7  – Empirical formula of copper iodide – discussion – listen to the first part of class then watch video below to attain the measurements:
 
You will be doing the lab virtually.
 
Lab 7 – Empirical Formula of Copper Iodide:

Lab 7 – Version 2:

 
Please move to the week 7 page to view the homework.

10/22  – 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
The Red team and the Green team are remote today. 
 
 
Zoom info for Period 2:
Topic: AP chemistry 10/22 – period 2
Time: Oct 22, 2020 08:00 AM Eastern Time (US and Canada)
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Zoom info for Period 3 : 
Topic: AP Chemistry – 10/22 – period 3
Time: Oct 22, 2020 09:00 AM Eastern Time (US and Canada)
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Period 2Period 3Class lecture – These periods are streamed.
 
1.  Limiting reagent Demo
2.  Chart method of limiting reagent problems/Classwork
Redo of Monday’s homework with moles and chart.
 
Classwork/demo:
Limiting reagent intro demo new worksheet.pdf
 
3. Lab 7 – data collection- blue team only – last 5  – 10 minutes
 
    a) Mass out copper & Product
    b) Mass out cleaned and dry copper (Final mass of copper)
 
– along with the initial mass of the copper you took 2 days ago you have all the data you need to complete the calculations.
period 4 (LAB): I will be reviewing the calculations for lab 7 in class – 
I will keep the stream open from period 3. 
 
1.  Please take out your measurements from the lab yesterday from lab that you participated in yesterday.  We will review this lab using the Student B video below:
 
2.  Complete all calculations and data analysis.
 
Lab 7 – Empirical Analysis of Copper Iodine
 
FIND YOUR FLASK THAT YOU PUT Cu (s) and I2(s) into last Friday. Be careful not to open another groups flask!
 
    a) Determine how you should mass out the contents of the reaction vessel so that you
         figure out as a lab group how you should go about determining the 
               
                 i) mass of the copper reacted.
                ii) and the mass of iodine reacted.
 
*The electric balances with (piezo electric crystals) are on every other lab table.
    
     b)  Place the stopper back on your Erlenmeyer flask so that the Iodine crystals do not sublime AWAY!
          Place your stoppered flask and unreacted copper in the cart where designated.
    c)  If you are handling the copper iodine (flaky green compound) you should put on gloves.  Everyone should be              in goggles.  I have provided plastic weighing boats for the compound if needed along with spatulas for            
          scraping.  Use paper towels to dry the unreacted copper if necessary. Place the copper Iodine in   
          the proper waste container that is marked in the cart when you are done with your measurements.
 
    d) Include lines in your data table that represent what you measured to GET the grams of copper reacted and      
         the grams of iodine reacted.
 
    e)  Write your procedure that includes what you did to get the grams of the copper reacted and iodine reacted.
 
    f)  Calculate the Empirical Formula of copper Iodide.
 
    g) Write a balanced chemical reaction for the synthesis reaction of copper iodide based on your empirical  
        formula.
 
     h)  Calculate the theoretical (pencil and paper math) grams of copper iodide based on your empirical  
        formula.
      i) Calculate the percent yield.
 
     j) Design and implement a group interpretive dance.
 
Please move to the week 7 page to view the homework.

10/23  – 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
 
The Blue Team and the Orange Team are Remote today. 
Zoom info for Period 2:
Topic: AP Chemistry – period 2 – 10.23
Time: Oct 23, 2020 08:00 AM Eastern Time (US and Canada)
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Zoom info for Period 4 : 
Topic: AP Chemistry – period 4 – 10.23
Time: Oct 23, 2020 08:00 AM Eastern Time (US and Canada)
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Period 2Period 4
 
1. Lab 7 – Copper Iodide Lab –  Error analysis – using the Ice table
 
2.  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
View Download
 
3.  Discussion of Bernouli’s Principle that explains how the aspirator creates low pressure.
 
Period 3 (Lab): You will do this Monday in Lab!
 
1. 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.
 
 
Please go to the week 7 to view the homework for the weekend.