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) – 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
10/21 – 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 CO2 (g) + 6 H2O (g)
Law of Conservation of Mass Demonstrations:
Last year Demo (period 3/4 class) – Thanks Brandon!
2 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:
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!
End of Monday…
10/20 – Tuesday “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 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 :
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 TEAM, BLUE TEAM, GREEN 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 :
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
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
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:
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
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.
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:
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.
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 – 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 |
|
|
empiri&molec ditto |
empiri&molec ditto |
(#1) |
| Analytical Chemistry II – Mol,Dilution, precipitation analysis.pdf View Download |
Analytical Chemistry II KEY NEW – Mol,Dilution, precipitation analysis.pdf View Download |
|
| 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.
Zoom info for Period 2:
Topic: AP Chemistry – 10/19
Time: Oct 19, 2020 08:15 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/86428011874?pwd=RHFlVHF2cWRUTVJEMUdTQkNVaTZhZz09
Meeting ID: 864 2801 1874
Passcode: g15JGh
One tap mobile
+16465588656,,86428011874#,,,,,,0#,,976520# US (New York)
Zoom info for Period 4 :
Topic: AP Chemistry – 10/19 – period 4
Time: Oct 19, 2020 09:45 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/88676068670?pwd=c1haTlBtYks2amZwUjRGdzRxMW9iUT09
Meeting ID: 886 7606 8670
Passcode: n38MZv
One tap mobile
+16465588656,,88676068670#,,,,,,0#,,062002# US (New York)
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 CO2 (g) + 6 H2O (g)
The water maker reaction:
2 H2 (g) + 1 O2 (g) —-> 2 H2O (g) + Energy
–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:
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) – 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 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)
Join Zoom Meeting
https://us02web.zoom.us/j/86326090121?pwd=MFZ2UlBpNitjSnIwbXVsdWE5eTVldz09
Meeting ID: 863 2609 0121
Passcode: AZ1VP3
One tap mobile
+16465588656,,86326090121#,,,,,,0#,,436112# US (New York)
Zoom info for Period 4 :
Topic: AP Chemistry – Period 4
Time: Oct 20, 2020 09:45 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/86076025698?pwd=VnNkVS9MZXRhbTh3L0xXVllMaUROUT09
Meeting ID: 860 7602 5698
Passcode: 88JrfF
One tap mobile
+16465588656,,86076025698#,,,,,,0#,,598029# US (New York)
period 2, period 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 :
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)
Join Zoom Meeting
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Meeting ID: 875 5929 9145
Passcode: 2F5ZwT
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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)
Join Zoom Meeting
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Meeting ID: 862 1855 5328
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Period 2: Period 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.
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)
Join Zoom Meeting
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Meeting ID: 861 4089 5156
Passcode: f2Gn1w
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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)
Join Zoom Meeting
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Meeting ID: 873 3264 7438
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Period 2, Period 3: Class lecture – These periods are streamed.
1. Limiting reagent Demo
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)
Join Zoom Meeting
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Meeting ID: 845 4929 5793
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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)
Join Zoom Meeting
https://us02web.zoom.us/j/88329259376?pwd=KzRFQlV5dnFPM1Y2bkFBVHFzWkhCdz09
Meeting ID: 883 2925 9376
Passcode: Cy6TKL
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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.
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.