Q1 : Week 9 – 10/30 – 11/3
<- Week 8 – Week 10 -> Jump to: Tuesday, Wednesday, Thursday, Friday
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Please Make sure Your read all instructions for all assignments.
LAB 5 – Percent by Mass of water in a hydrate is Late!
Lab 6 – Empirical Formula of a Hydrate is Late!
________________________________________________________ Jump to: Monday Homework 10/30 – Monday – A Day – 2/3a Lab, 4
a) To demonstrate a limiting reagent demo – Flaming tube demo b) To review the stoichiometry of how to determine the Limiting Reagent and the Excess Chemical. c) To review the Stoichiometry Table in limiting reagent problems
Period 2/4 :
1. Flaming Tube Demo –
a) Which reactant was Limiting the reaction?
c) Calculate the Limiting reagent given the worksheet from homework of Thursday.
d) Use the chart method (Stoichiometry table) to solve the same problem and “see” the ratios.
Limiting reagent intro demo new worksheet.pdf
2) Reviewed the Limiting Reagent and Excess from the Stoichiometry 3 – ICE Table Molarity Salsa.pdf worksheet using the “chart method”
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3) Modeled the 1st side of Stoichiometry 3 with Ice Table.
Today (in class and live ) I will model the 1st side with the chart method and particulate diagram of ions
Stoichiometry 3 – ICE TABLE (side 1) – Molarity limiting reagent p.pdf
Period 3a :
1. Note-taking of how to complete the Lab 8 – Precipitation Analysis of an Alkali Carbonate
2. Collect the precipitate and place in oven.
Run Lab 7 – isolate the precipitate and place in oven
________________________________________________________________________ Lab 8 – Precipitation Analysis of an Alkali carbonate
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_____________________________________________________ jump to: top 10/30 – Monday’s Homework: –
1. Complete the backside of the Limiting reagent intro demo new worksheet.pdf (questions 3 and 4 ONLY) that was homework (front side) from this weekend, using the video posted below. You could try these 2 questions on your own first and then view the video if you are feeling adventurous!
2. Complete the Short Form from a Tall Teacher below: This form is based on a recent free response question. You have 3 submissions to this form. Use the ICE Chart!
1 : Side 2 of Friday’s homework – Teaches the chart method!
________________________________________________________________________ Jump to: Tuesday Homework / top 10/31 – Tuesday – B Day – 2, 3b/4 Lab
a) To Review the ICE table method of determining the limiting reagent for solutions and the precipitation reaction.
b) To perform or take notes on a precipitation analysis lab and determine the limiting reagent and excess chemical.
c) To Perform pumpkin stoichiometry!
Period 2/3b :
1. We will review the Limiting Reagent Form 1 with the key below:
Limiting Reagent Form 2021 – Google Forms key.pdf View Download
1. Lab 8 continues
2. mass of precipitate —-> identification of Alkali carbonate
Pumpkin Stoichiometry Presentation:
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Lab 8 – Precipitation Analysis of an Alkali carbonate
View Download
Calculations:
_____________________________________________________ jump to: top 10/31 – Tuesday’s Homework: –
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.
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1 : Stoichiometry 4 – Precipitation – limiting reagent – side one tutorial.
2 : Stoichiometry 4 – Precipitation – limiting reagent – side 2 tutorial.
____________________________________________________________________________ Jump to: Wednesday Homework / top 11/1 – Wednesday – A Day – 2/3a Lab, 4
Period 2, 3a –
1. Complete the data collections of Lab 8 – Our precipitate (CaCO3) is in the oven.
2. Identification of Sample A or B – Visual identification of the salts, Q and A of the Lab.
3. Complete the Stoichiometry box for Lab 8/ review of homework
Period 4 –
1. Complete the data collections of Lab 8/ identify the salt – for those that did not have data
2. Complete the Stoichiometry box for Lab 8/ review of homework
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Lab 8 – Precipitation Analysis of an Alkali carbonate
View Download
Calculations:
Lab 8 introduction – A review of the basic premise of this precipitation analysis lab
______________________________________________________ jump to: top 11/1 – Wednesday Homework: –
1. Please view the Lab 8 – review video below if you do not completely understand the lab 8.
Lab 8 is due tomorrow!!!We finished it in class but make sure the lab is handed in tomorrow!
2. Complete the form based on Lab 8’s calculations. Today in class we completed the data and calculations for this lab. We determined the mass of the experimental precipitate AND the theoretical through the stoichiometry. This lab was a hands-on approach to precipitation analysis and precipitation reaction in general. Monday’s/Tuesday’s homework were baseed on the same concepts! IN the FORM BELOW WE ARE PRETENDING that we are doing the same lab and will follow the same steps as we did today/yesterday (with given values of mass of your unknown salt and filter paper). IF you need to please review these calculations with the video below.
1. Lab 8 review – This might help with your calculations and tonights form!
_______________________________________________________ Jump to: Thursday Homework /top 11/2 – Thursday – B Day – 2, 3b/4 Lab
Main focus –
b) To perform the analysis of carbonates (Lab 9 )
Period 2,3b,4 –
1. Gravimetric Form Review/lab 8
2. Lab 9 – Analysis of Carbonates
a) introduction b) collect initial data c) predict outcomes
3. Begin Take-home quiz.
._________________________________________________ Lab 9 – Analysis of Sodium Carbonate and Sodium Hydrogen Carbonate
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_____________________________________________________ jump to: top 11/2 – Thursday Homework: –
1. Please complete the take-home quiz – due in class tomorrow. Hint:To complete this analysis you need to think how you completed Lab 8 – Precipitation analysis. I have reposted 2 video that will help with your understanding of basic premise of precipitation analysis.
Stoichiometry 4a – Precipitation – limiting reagent – quiz.pdf
View Download
Lab 8 introduction – A review of the basic premise of this precipitation analysis lab
Lab 8 calculations review – This might help with your calculations and tonights form!
________________________________________________________________ Jump to: Friday Homework/top 11/3 – Friday – A Day – 2/3a Lab, 4
Period 2,3a – Collect Golden Arches Quiz
1. Identification of Sample A or B – Visual identification of the salts, Q and A of the Lab.
2. Complete the data collections of Lab 9 – The NaCl (aq) solution (product) is being heated to evaporate off the water.
3. Review of Take- Home quiz.
4. Take an in-class quiz on precipitation (surprise?) 🙂
5. Pumpkin Stoichiometry?
1. Complete the data collections of Lab 9 – The NaCl (aq) solution (product) is being heated to evaporate off the water. – we did not get to this today.. we will complete this Monday..
2. Review of Take- Home quiz.
3. Take an in-class quiz on precipitation (surprise?) 🙂
4. Pumpkin Stoichiometry?
.______________________
Lab 9 – Analysis of Sodium Carbonate and Sodium Hydrogen Carbonate
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Lab 9 review:
Today’s Pumpkin Stoichiometry :
________________________________________________ jump to: top 11/3 – Friday’s Homework: –
1. For All Classes – Please complete the Results and the conclusion of Lab 7 – Friday 11/10. Please use the link posted belwo posted below to help with error analysis and/or calculations.
All instructions along with examples can be found in the link below.
Formal Lab Write-up Instructions: https://mrgrodskichemistry.com/lab-7-formal-write-up/
Please hand in all Labs (4, 5, 6, 8, 9). They are all due Monday, 11/6. Lab 6 and 8, 9 do not have conclusions. Labs 1 – 6 are Late!
2. Please complete the NEW take-home quiz – due in class Monday. Hint: no hints needed!!
Stoichiometry 4c – Precipitation – limiting reagent 21-22 quiz .pdf
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Maybe reviewing the key to last nights take-home quiz could help. Also Tuesday nights homework had videos that reviewed these concepts.
Last Nights Golden Arches Quiz Key: Stoichiometry 4a – Precipitation – limiting reagent key p .pdf View Download
3. Please view the lecture below and complete the questions 1 and 2 (on the back) the limiting reagent intro demo new worksheet that was given out last week. It was Monday’s homework.
Question 1, 2 of the backside (You did questions 3 and 4 Monday!) uses the concept of equilibrium with our ICE tables.
4. Study for test 2 – Link to Test 2 Notes
Monday you will have the part of the test that will be very much like the last 2 quizzes and multiple choice questions that are from all our skills learned from Analytical Chemistry.
Here are the keys from the last 2 quizzes :
Stoichiometry 4c – Precipitation – limiting reagent key p .pdf
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Golden Arches Quiz:
Stoichiometry 4a – Precipitation – limiting reagent Key p .pdf
View Download
3 : Side 2 of Friday’s homework – Teaches the chart method!