Q1 : Week 5 – 10/2 – 10/6
<- Week 4 – Week 6 -> Jump to: Tuesday, Wednesday, Thursday, Friday
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Please Make sure Your read all instructions for all assignments.
LAB 1 – Gerber Voltaic Cell is LATE!!!!!
LAB 2 – Voltaic Cell design is LATE!!!!!
LAB 3 – Electrolysis of copper (II) Chloride is DUE FRIDAY!
______________________________________________________ Jump to: Monday Homework 10/2 – Monday – B Day – 2, 3b/4 Lab
Main focus –
a) To connect the concepts of electrolytic calculations with Lab 3 by determining the experimental mass of the Cu and comparing that result with the stoichiometric calculation.
b) Introduce the concepts of Molarity of the solution (in class using electrolytic cell calculations).
Period 2, 4:
Electrolytic cell (electrolysis of water) & voltaic cell with more vanilla electrolytic cell calculations:
Electrolysis of water – making the pure forms of the elements that combine to make water:
2H2O (l) + 2e– → H2 (g) + 2OH– -0.83 volts
2H2O (l) → O2(g) + 4H+ + 4e– -1.23 volts
E0 cell = -2.06 volts
—————1800————————1803————————–1831———————--1860———–
Voltaic Pile Humphrey Davis Michael Faraday’s Mole Concept created! electrolysis of water Laws of electrolysis created
Electrolytic Problems Expanded key p.pdf View Download
2. Review of Electrolytic Cell Extra Credit Quiz
Electrolytic cell quiz extra Credit Form KEY 1819.pdf
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Period 3a –
1. Lab 3 : Determining the grams of copper from electrolysis –
f) Start your conclusion / HW
LAB 3 – Determine the grams of copper collected at the cathode of an electrolytic cell of an unknown concentration of copper (II) chloride–
a) Setup an electrolytic cell b)complete the lab diagram c) collect and filter your copper d) place in the oven e) Calculate the theoretical amount of grams of copper expected. f) Determine experimental mass of copper. g) Calculate percent error and Molarity of solution.
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10/2 – Monday’s Homework: –
1. Please complete the Electrolytic Cell Form 2. You will have 3 submissions tonight.
An excellent way to to review for tomorrows Electrolytic cell quiz!
2: Electrolytic cell Lab – 3 of review: Error Analysis
Jump to: Tuesday Homework / top
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10/3 – Tuesday – A Day – 2/3a Lab, 4
Main focus –
b) To complete the Electrolytic cell Lab 3.
Period 2,4:
Period 3a:
1. Lab 3 : Complete Lab by obtaining the experimental mass, Molarity, and Percent error.
2. Reviewed Errors and started the conclusion
______________________________________________________ Jump to: top 10/3 – Tuesday Homework: –
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1:Electrolysis of quiz review:
Electrolytic cell quiz key p.pdf View Download
2: Flash animation turned into a video :
Please use this video to complete the Lattice Energy Form if you could not connect with the Link:
Jump to: Wednesday Homework / top ______________________________________________ 10/4 – Wednesday – B Day – 2, 3b/4 Lab

b) To perform unit cell calculations to determine, density, lattice constant, atomic mass, and atomic radius.
https://openstax.org/books/chemistry-2e/pages/10-6-lattice-structures-in-crystalline-solids
Diffraction of light demo – double slit experiment = green laser
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The following is an example of an interference pattern or a diffraction pattern that occurred during today’s demo. This is the famous double slit experiment that proves light has wave properties. I pointed a green laser at a card that had 2 small double slits. The bright spots are the constructive interference while the space between the dots are destructive interference. Based on some measured values and Bragg’s Law we can calculate the distance between the slits that the light passed through AND this is what is done to measure the distance of the lattice constant from metal crystals in x-ray crystallography. |
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LAB 4 – The Metal Foil lab – Determine the number of atoms high a copper foil and aluminum foil are using volume, density and unit cell calculations.
The metal foil lab activity is not a formal writeup but please complete it as per the procedure in the handout that I gave. A piece of paper with your work neatly written with units and sig figs showing all calculations will suffice.
Discussed the volume unit relatives cm3 = ml and the conversions of m3 to cm3metric prefixes:
K H D [ ] d c m —–> micro, nano, pico
Unit cell for class:
Presentation for Class and Lab 4:
Today’s Lesson:
_______________________________________________________ Jump to: top 10/4 – Wednesday Homework: –
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3. Please complete question 2 of from the Calculations of Close Cubic Packing Structures.pdf worksheet and review with the key.
2: Crystalline Unit Cell problems HW video : This will start at question 2!
Jump to: Thursday Homework /top
__________________________________________________________ 10/5 – Thursday – A Day – 2/3a Lab, 4
b) To perform unit cell calculations to determine, density, lattice constant, atomic mass, and atomic radius.
c) To identify substitutional and interstitial alloys.
1. Complete/Review classwork problems – Question 2 and 3 for both periods 2 , 4
2. Alloy lesson – How adding different metals into a metal crystal will change the metals properties
Keep Galvanic Corrosion for the second day.. (get to the Alloys!)
Period 3a –
1. Lab 4 : Metal Foil Lab
LAB 4 – The Metal Foil lab – Determine the number of atoms high a copper foil and aluminum foil are using volume, density and unit cell calculations.
Objectives:
1. Calculate the Thickness of an aluminum and copper foil (thin piece of metal).
2. Determine the number of atoms high a copper foil and aluminum foil are using volume, density and unit cell calculations.
The metal foil lab activity is not a formal writeup but please complete it as per the procedure in the handout that I gave. A piece of paper with your work neatly written with units and sig figs showing all calculations will suffice.
Discussed the volume unit relatives cm3 = ml and the conversions of m3 to cm3metric prefixes:
K H D [ ] d c m —–> micro, nano, pico
Thin Foil Lab Instructions:
Alloy Presentation for class lesson:
____________________________________________________ Jump to: top 10/5 – Thursday Homework: –
1. Please complete questions 2, and 3 of the Crystalline Unit Cell Problems.pdf and review with the key. Feel free to use the video to help review these questions.
Crystalline Unit Cell Problems.pdf
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2. Please view the lecture (first 23 minutes only) and complete the Alloy worksheet.pdf worksheet and review with the key.
2: Crystalline Unit Cell problems HW video : This will start at question 2!
2: Alloy introduction video : Stop at 23:00 (alloy lecture part)
Jump to: Friday Homework/top __________________________________________________________________ 10/6 – Friday – B Day – 2, 3b/4 Lab
Main focus –
Textbook: 10.6 – Lattice Structures
Period 2 ,4 –
1. Unit Cell Homework review – Question 2 & 3
1. Lab 4 – Metal Foil Lab Continues
Alloy Presentation for class lesson:
Objectives:
1. Calculate the Thickness of an aluminum and copper foil (thin piece of metal).
2. Determine the number of atoms high a copper foil and aluminum foil are using volume, density and unit cell calculations.
The metal foil lab activity is not a formal writeup but please complete it as per the procedure in the handout that I gave. A piece of paper with your work neatly written with units and sig figs showing all calculations will suffice.
Discussed the volume unit relatives cm3 = ml and the conversions of m3 to cm3metric prefixes:
K H D [ ] d c m —–> micro, nano, pico
Thin Foil Lab Instructions:
__________________________________________________ Jump to: top 10/6 – Friday’s Homework: –
Electrolysis quiz Review Video is posted below:
4: Unit Cell and alloys
Textbook: 10.6 – Lattice Structures
Basics of interstitial and substitutional alloys, calculations using density, lattice constant and atomic radii with FCC or BCC. Conversions, and use of Avogadros number.
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Crystalline unit cell problems key p.pdf
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Blank Quiz | Quiz Key |
Voltaic Cell quiz 1.pdf View Download |
Voltaic Cell quiz 1 key.pdf View Download |
Voltaic Cell Quiz 2 – 22-23.pdf View Download |
Voltaic Cell Quiz 2 – 22-23 KEY.pdf
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Electrolytic cell quiz .pdf View Download |
Electrolytic cell quiz key p.pdf
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Electrolysis of quiz review: