Select Page

Archive – Q2 week 8 – 20 – 21

Week of 1/11 – 1/15
 

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       
                
   Monday                         In class:         A                  Lab                   Lab               Single Class
                                   Remote:                           Lab                   Lab              Single Class
 
                                         In class:         B         Single Class        LAB                   LAB
                                                          Remote:                     Single Class        LAB                   LAB
 
                                        In class:              C         Single Class              LAB                    LAB
                                   Remote:                     Single Class        LAB                    LAB
 
                                       In class:          D               Lab                   Lab             Single Class
                                   Remote:                           Lab                   Lab              Single Class
                 
 
This weeks 5 day Schedule:
 
1/11  – Monday “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
1/12  – Tuesday  “B” Day  period 2,  –  I   2(B,D) 3(D) AP CHEMISTRY
                                                      – period 2, –  R   2(B,D) 3(D) REMOTE INSTRUCTION
 
                                                        -period 3,4 (LAB) – I   3(B) 4(B,D) AP CHEMISTRY
                                                        -period 3,4 (LAB) – R  3(B) 4(B,D) REMOTE INSTRUCTION
 
1/13  –  Wednesday –  “C” Day – period 2, –  I    2(A,C) 3(A)  AP CHEMISTRY
                                                            –period 2, –  R   2(A,C) 3(A) REMOTE INSTRUCTION
                
                                                           -period 3,4 (LAB) – I.  3(C) 4(A,C) AP CHEMISTRY 
                                                           -period 3,4 (LAB) – R  3(C) 4(A,C) REMOTE INSTRUCTION
 
1/14  –  Thursday-  “D” Day  – period 2,3 (Lab)  –  I   2(B,D) 3(D) AP CHEMISTRY
                                                       – period 2,3 (Lab) –  R  2(B,D) 3(D) REMOTE INSTRUCTION
  
                                                         -period 4 – I  3(B) 4(B,D) AP CHEMISTRY
                                                         -period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
 
1/15  – Friday “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

1/11  – Monday “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 Team and the Green team are Remote today. Please move to the Remote Instruction page.
 
Period 2, 4:
 
1.  Derivation Quiz – Gas Law Derivation Quiz – 15 minutes
 
2. Pressure demo’s- Proof of atmospheric pressure. 
   
     Suction cups, flat square demo
 
     Glass with water/cardboard, Glass with water/without cardboard!, Large Flask and Cardboard
3. Bourdon gauges/manometers – connections – 
 
4. Bernoulli’s Principle: did not get to 
Pressure intro Presentation:

Pressure intro

Period 3:
2.  Lab 17 – 
 
Lab 17 – Molecular Mass of an unknown gas.pdf
View Download
 
1/11  – Monday “A” Day – Homework:
 
1:  Please view the lecture on Daltons Law in any speed but take notes on the derivation:
2:  Complete questions 1 and 3 only in the Gas Law worksheet 7 – Daltons Law.pdf worksheet.
       And Review with the key or Lecture below.
Gas Law worksheet 7 – Daltons Law.pdf
View Download
Gas law worksheet 7 – Daltons Law Key.pdf
View Download
3:  Watch the Daltons Law Demo and Fire syringe demo and complete the form below:
 
Daltons law lecture: (do not listen to the instructions of which worksheet to complete at the end of this lecture)
 
Daltons worksheet review (questions 1,3):
 
 

Daltons Law Demo:

Fire syringe Demo:  proves that as pressure increase the temperature also increases
                                         That is why my demo above had a larger value of pressure than expected above                                          the extra air in the tube.

 

 
Form:   YES!!!!
 
You have a total of 2 submissions tonight of this form that is on auto-reply.

Daltons Law of Partial Pressure Form 2021

 

 
End of Monday!

1/12  – Tuesday  “B” Day  period 2,  –  I   2(B,D) 3(D) AP CHEMISTRY
                                                 – period 2, –  R   2(B,D) 3(D) REMOTE INSTRUCTION
 
                                                   -period 3,4 (LAB) – I   3(B) 4(B,D) AP CHEMISTRY
                                                   -period 3,4 (LAB) – R  3(B) 4(B,D) REMOTE INSTRUCTION
 
The Blue and the Orange team are remote today. Please move to the Remote Instruction Page.
 
Period 2, Period 3
 
1.  Derivation Quiz – Gas Law Derivation Quiz – 15 minutes
 
2.  

 Lab 17 –  Determination of Molecular mass of Helium and Argon

 
Lab 17 – Molecular Mass of an unknown gas.pdf
View Download
 
Period 4:
 
1. Review of Daltons Law:  video demos reviewed
 
2. 

Large Flask and Cardboard – with daltons law

 
3. Bernoillis Principle – 

Pressure intro

1/12  – Tuesday  “B” Day Homework:
 
1.  Complete questions of 4 and 2 only in the Gas Law worksheet 7 – Daltons Law.pdf worksheet.
      Please do question 4 first and then question 2!
       
3. Review with the key or use the video posted below.
Gas Law worksheet 7 – Daltons Law.pdf
View Download
Gas law worksheet 7 – Daltons Law Key.pdf
View Download
End of Tuesday..

1/13  –  Wednesday –  “C” Day – period 2, –  I    2(A,C) 3(A)  AP CHEMISTRY
                                                            –period 2, –  R   2(A,C) 3(A) REMOTE INSTRUCTION
                
                                                           -period 3,4 (LAB) – I.  3(C) 4(A,C) AP CHEMISTRY 
                                                           -period 3,4 (LAB) – R  3(C) 4(A,C) REMOTE INSTRUCTION
 
The Red Team and the Green team is remote today.  Please move to the Remote Instruction Page.
 
Period 2, 3:
 
1. Lab 17 – review
 
    a) Evaluate Data – Complete calculations and hand in
    b) You may have to redo the gas measurement if really off.
    c) errors
 
2.  Daltons Law of Partial Pressures – 
 
a) Review of Dalton’s law partial pressure demo’s
 
   mole fraction, volumes fraction, pressure fraction are equivalent due to 
 
                                                V = n * K      (Avogadro’s hypothesis)
 
b) Review of Homework:
Gas law worksheet 7 – Daltons Law Key.pdf
 
c) partial pressure ideas
      Scuba Tanks, Brooklyn Bridge, and the Romans (lung demo)

Scuba diving and Gas Laws

Period 4:
 
1.  

 Lab 17 –  Determination of Molecular mass of Helium and Argon

 
Lab 17 – Molecular Mass of an unknown gas.pdf
View Download
 
Today’s lesson:
1/13  –  Wednesday –  “C” Day Homework:
 
1. Please complete the following worksheet AND review with the key.
 
 *Remember what is proportionate when gases are in the same container!
Daltons Law Worksheet 2.pdf
View Download
 
Daltons Law Worksheet 2 Key.pdf
View Download
 
End of Wednesday..

1/14  –  Thursday-  “D” Day  – period 2,3 (Lab)  –  I   2(B,D) 3(D) AP CHEMISTRY
                                                       – period 2,3 (Lab) –  R  2(B,D) 3(D) REMOTE INSTRUCTION
  
                                                         -period 4 – I  3(B) 4(B,D) AP CHEMISTRY
                                                         -period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
 
The Blue team and the Orange Team are Remote today. Please move to the Remote Instruction Page.
 
Period 2, Period 4 – 
 
1. Review of Last Nights Homework – What is proportional when gases are in the same container?
 
Daltons Law Worksheet 2 Key.pdf
View Download
2. Complete discussion of Scuba Diving applications from yesterday.
 
3. Review limitation in Monday’s night homework, question 7 – Demos
4. Lab 18 – Molecular Mass of quadrupled distilled Butane – intro
 
Period 3
 
1. Lab 18 – Molecular Mass of quadrupled distilled Butane
 
Lab 18 – Purity of Butane – water displacement.pdf
View Download
 
Vapor Pressure of Water table.pdf
View Download
 
1/14  –  Thursday-  “D” Day Homework – 
 
1:  Please complete the Gas Law Stiochiometry 2015.pdf worksheet and review with the key.
Think about how we solved the homework Tuesday night using Dalton’s Law of Partial Pressure and the manometer (column of water).
Gas Law Stoichiometry 2015.pdf
View Download
 
Gas Law Stoichiometry key p.pdf
View Download
 
End of Thursday..

1/15  – Friday “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 Team and the Green team is remote today.  Please move to the Remote Instruction Page.
Period 2, Period 4:
1.  Quick Homework review 
 
Gas Law Stoichiometry key p.pdf
View Download
2. Lab 18 – Molecular Mass of quadrupled distilled Butane
 
Lab 18 – Purity of Butane – water displacement.pdf
View Download
 
Vapor Pressure of Water table.pdf
View Download
Period 3:  Bernoulli’s Principle – 

Pressure intro

1/15  – Friday “A” Day  Homework:
 
1.  Complete Lab 18 calculations.  I do no not want any GAS LAW LAB YET, as we will add a conclusion to these labs ONCE WE learn about the limiting factor or the cause of the greatest errors in gas law labs. So please complete the calculations and then Hold onto them until I tell you to add the conclusion.
 
If you are having trouble with the calculations of this lab here is a review:
 
Lab 18 – Molecular Mass of butane Review video:
2.  Read the Notes below and view the videos of the demos below.
Class notes on vapor pressure:
Notes:  Vapor pressure – slide 8 – 17 in Pressure Intro Presentation – posted at the end of today’s post.
 
   

Vapor Pressure is the Force per Area (F/A) created by gas molecules that have just evaporated from the liquid state.  This pressure of evaporating liquids depends on how well the molecules of the liquid attract each other.  These attractions are called IMF’s (Intermolecular Forces or Attraction).  The stronger the IMF between the molecules in the liquid the MORE that the liquid Resists evaporation AND THUS will evaporate less (at the same temperature) and thus produce LESS vapor pressure.
The strength of the IMF’s are unique for each liquid and thus each liquid has a unique vapor pressure curve.

 

Another important FACTOR in vapor pressure is the Temperature of the the liquid.  Even though each liquid has its own vapor pressure due to its unique strength of IMF’s, ALL LIQUIDS will increase their vapor pressure or evaporating due to an INCREASE in Temperature!!
An increase in Temperature is a result of an increase of energy that is absorbed AND will be used to free molecules from each other by breaking IMF’s.

*IMF’s ARE NOT BONDS!

All liquids have a unique vapor pressure curve based on how strong or week they ATTRACT each other.  
Example:  Propanone does not H-bond with itself but water does.  Water has Stronger IMF than propanone.
 
All liquids will increase their vapor pressure with an increase in Temperature.
Example:  Water has a lower vapor pressure than Propanone at the same temperature but they will both increase when temperature increases as IMF’s are broken.
 
Vapor pressure values will increase with increase of temperature 
until the vapor pressure EQUALs the Atmospheric pressure!
I like to think of boiling as the temperature which a liquid reached MAX EVAPORATION at a certain atmospheric Pressure.  What limits this temperature OR BOILING IS THE Atmospheric Pressure.  This means that every liquid can boil theoretically at any temperature!  If you look back at Table H, water can boil at 55 degrees Celsius if the Atmospheric pressure is 10 kPa (about .1 atm).  Lowering the atmospheric pressure will affect the boiling pint because you will need less vapor pressure to Equal or match the lowered atmospheric pressure.  Water will also boil at about 105 degrees when the atmospheric pressure is raised to 120 kPa (about 1.2 atm).  To combat this will usually talk about boiling in terms of STANDARD PRESSURE = 101.3 kPa or 1 atm or 760 torr or 14.7 psi.  In Table H above the horizontal line going across is the STANDARD atmospheric Pressure, thus when the vapor pressure of any liquid reached that line at standard pressure the temperature of the this boiling point is the NORMAL BOILING POINT. We compare liquids Normal Boiling points!
 
            Larger Normal Boiling Point    = Higher IMF’s = Lower Vapor Pressure                   WATER
            Smaller Normal Boiling Point   = Lower IMF’s = Higher Vapor Pressure             PROPANONE
 
Distillation of Coke Demo:
 

  A mixture (2 or more substances that are not Bonded together) can be separated physically.  A physical separation is one that breaks attractive forces AND NOT CHEMICAL BONDs.  

In this demo the water in the Coke mixture retains its unique boiling point because it Is NOT BONDED with any other component.  It will reach its maximum vapor pressure (boiling point) at different temperatures than the other components (because water has unique strength of attractive forces that results in a unique vapor pressure) thus water will leave as a gas and then cool to condense into a liquid as its distilled. 

 

I use distilled water for all of my solutions that I make for all of the demos and labs. WHY?
 
Crude oil Refinery:

This is picture of a gasoline refinery that you can see in New Jersey as you travel south on the New Jersey Turnpike.

This is an example of  Fractional Distillation of Crude oil. Like all Distillation it is based on the different boiling points/vapor pressures of the mixtures of liquids that are being separated.

Notice the tubes coming off the columns at different heights. This demonstrates the condensation of the vapors at different temperatures.  The higher the gas needs to travel to cool and condense into a liquid the weaker the IMF’s of the liquid in the mixture and the high its vapor pressure.

Remember that boiling temperature (point) is equal to the condensation temperature.

Compounds at that are gases at room temperature are Gases because they have week attractive forces between them AND THUS they would boil at very low temperatures.  
 
They are gases because they have already BOILED!!!! AND THUS they have extremely high vapor pressures!  And thus they must have low NORMAL boiling points because their very high vapor pressures will equal the atmospheric pressure at low temperatures.
 
So gases have:
 
                              1 ) very weak IMF’s (which make the molecules evaporate easier!)
 
                              2) High vapor pressure (due to the ease in which molecules evaporate)
 
                              3) Low Boiling points (due to the high vapor pressure that reaches atmospheric pressure                                                                                              quickly).
 
Here is a great example.  Nitrogen liquid boils at – 196 degrees Celsius and thus has already boiled and exits as a gas in our atmosphere.  Below I have liquid Nitrogen, N2 (l) which was made by pressurizing Air into a liquid (forcing the nitrogen molecules to attract each other).
 
In this demonstration,  I add this boiling liquid to a paint can to demonstrate the vapor PRESSURE of this liquid that easily becomes a gas.
 
3.  View the Lecture:
4. View slides 8 – 17 of the presentation below:
 
5. Complete the form below:
 

Vapor Pressure Form 2021

End of week 8!

 
REMOTE INSTRUCTION:
Week of 1/11 – 1/15
 
 
1/11  – Monday “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 Team and the Green team are Remote today. 
 
Zoom Meeting link:
 
Topic: AP Chemistry – 01.11 – Periods 2,3,4
Time: Jan 11, 2021 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/83884658641?pwd=Vm1ZRHZZeXFCNktwN0Y3R1pWZ2xQUT09
Meeting ID: 838 8465 8641
Passcode: uLs7F7
One tap mobile
+16465588656,,83884658641#,,,,*509780# US (New York)
 
 
Period 24:
 
1.  Derivation Quiz – Gas Law Derivation Quiz – 15 minutes
 
2. Pressure demo’s- Proof of atmospheric pressure. 
   
     Suction cups, flat square demo
 
     Glass with water/cardboard, Glass with water/without cardboard!, Large Flask and Cardboard
3. Bourdon gauges/manometers – connections – 
 
4. Bernoulli’s Principle:
Pressure intro Presentation:

Pressure intro

Period 3:  
 
The Blue team will be completing the lab in class. The Red team (remote) can begin the homework.

1/12  – Tuesday  “B” Day  period 2,  –  I   2(B,D) 3(D) AP CHEMISTRY
                                                 – period 2, –  R   2(B,D) 3(D) REMOTE INSTRUCTION
 
                                                   -period 3,4 (LAB) – I   3(B) 4(B,D) AP CHEMISTRY
                                                   -period 3,4 (LAB) – R  3(B) 4(B,D) REMOTE INSTRUCTION
 
The Blue and the Orange team are remote today.
 
Zoom Meeting link:
 
Topic: AP Chemistry – 01.12 – Periods 2,3,4
Time: Jan 12, 2021 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/84287480432?pwd=L0xHTXBoMnc2eEt5MW1Fa0tLSHBRdz09
Meeting ID: 842 8748 0432
Passcode: 43TMiY
One tap mobile
+16465588656,,84287480432#,,,,*576104# US (New York)
 
Period 2Period 3:  The Blue and Orange Team can start the homework.
 
The RED Team and the Orange teams will completing the Derivation Quiz and the Lab 17 that  you guys completed yesterday. 
 
1.  Derivation Quiz – Gas Law Derivation Quiz – 15 minutes
 
2.  

 Lab 17 –  Determination of Molecular mass of Helium and Argon

 
Lab 17 – Molecular Mass of an unknown gas.pdf
View Download
 
Period 4:  Please tune in with Zoom meeting for this period.
 
Full REMOTE Students:
 
Please complete Lab 17 with Live stream or the video below:
Live Stream Recorded:

 

Virtual Lab:
1. Bernoillis Principle – 

Pressure intro


1/13  –  Wednesday –  “C” Day – period 2, –  I    2(A,C) 3(A)  AP CHEMISTRY
                                                            –period 2, –  R   2(A,C) 3(A) REMOTE INSTRUCTION
                
                                                           -period 3,4 (LAB) – I.  3(C) 4(A,C) AP CHEMISTRY 
                                                           -period 3,4 (LAB) – R  3(C) 4(A,C) REMOTE INSTRUCTION
 
The Red Team and the Green team is remote today.  
 
Zoom Meeting link:
Topic: AP Chemistry – 01.13 Periods 2,3,4
Time: Jan 13, 2021 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/81285682361?pwd=dmF2NDUxakFESnNvZURFc0ZUYzloZz09
Meeting ID: 812 8568 2361
Passcode: vcs2qW
One tap mobile
+16465588656,,81285682361#,,,,*506166# US (New York)
 
Period 23:
 
1. Lab 17 – review
 
    a) Evaluate Data – Complete calculations and hand in
    b) You may have to redo the gas measurement if really off.
    c) errors
 
2.  Daltons Law of Partial Pressures – 
 
a) Review of Dalton’s law partial pressure demo’s
 
   mole fraction, volumes fraction, pressure fraction are equivalent due to 
 
                                                V = n * K      (Avogadro’s hypothesis)
 
b) Review of Homework:
Gas law worksheet 7 – Daltons Law Key.pdf
 
c) partial pressure ideas
      Scuba Tanks, Brooklyn Bridge, and the Romans (lung demo)

Scuba diving and Gas Laws

Period 4:
 
The Green team completed the lab in class you guys can complete the homework.
 
1.  

 Lab 17 –  Determination of Molecular mass of Helium and Argon

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

1/14  –  Thursday-  “D” Day  – period 2,3 (Lab)  –  I   2(B,D) 3(D) AP CHEMISTRY
                                                       – period 2,3 (Lab) –  R  2(B,D) 3(D) REMOTE INSTRUCTION
  
                                                         -period 4 – I  3(B) 4(B,D) AP CHEMISTRY
                                                         -period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
 
The Blue team and the Orange Team are Remote today. 
 
Zoom Meeting link:
Topic: AP Chemisty – 01.14 – Periods 2.3,4
Time: Jan 14, 2021 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/85238095728?pwd=NVUvTDZyeTBFOE1CaEF4UXpFbzJwQT09
Meeting ID: 852 3809 5728
Passcode: MLyMN5
One tap mobile
+16465588656,,85238095728#,,,,*779306# US (New York)
Period 2Period 4 – Class Lesson
 
1. Review of Last Nights Homework – What is proportional when gases are in the same container?
 
Daltons Law Worksheet 2 Key.pdf
View Download
2. Complete discussion of Scuba Diving applications from yesterday.
 
3. Review limitation in Monday’s night homework, question 7 – Demos
4. Lab 18 – Molecular Mass of quadrupled distilled Butane – intro
 
Period 3 – The Red team will be working on Lab 18.  The Blue team can work on tonight’s homework.
 
1. Lab 18 – Molecular Mass of quadrupled distilled Butane
 
Lab 18 – Purity of Butane – water displacement.pdf
View Download
 
Vapor Pressure of Water table.pdf
View Download
 

1/15  – Friday “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 Team and the Green team is remote today.  
 
Zoom Meeting link:
Topic: AP Chemistry – 01.15 Periods 2,3,4
Time: Jan 15, 2021 08:00 AM Eastern Time (US and Canada)
 
Join Zoom Meeting
https://us02web.zoom.us/j/85952814565?pwd=ckVaQVYvNS80ZlZPRVI0RU5KdUhsdz09
 
Meeting ID: 859 5281 4565
Passcode: h7SriS
One tap mobile
+16465588656,,85952814565#,,,,*020072# US (New York)
 
 
Period 2Period 4:
1.  Quick Homework review 
 
Gas Law Stoichiometry key p.pdf
View Download
The RED team has already completed the lab yesterday and so you can move to the homework.
 
The Green Team with team with the FULL REMOTE STUDENTs  WILL COMPLETE with a LIVE STREAM today of the Lab.
2. Lab 18 – Molecular Mass of quadrupled distilled Butane
 
Lab 18 – Purity of Butane – water displacement.pdf
View Download
 
Vapor Pressure of Water table.pdf
View Download
 
 
Live stream of Lab 18 – 
Period 3:  Bernoulli’s Principle – 

Pressure intro