Review our notes from today and section 10.8 in your textbook to complete questions (79,80,98,99) from pages 479-481 in your textbook.  This includes quantifying enthalpy of vaporization (energy required to break IMFs in changing from a liquid to a gas) from a vapor pressure curve; read pages 461 and 462 very thoroughly to understand how enthalpy of vaporization relates to vapor pressure quantitatively.  It requires you to prepare a second graph (ln Vapor pressure vs 1/Temperature in Kelvins) and calculate the slope of the straight line that forms.  The value you use for "R" in thermodynamics is 8.31 J/mole K; you'll notice this value is on AP formulas and constants page

review our notes from today and section 8.8 in your textbook on covalent bond energies including the sample exercise 8.5 to complete questions (53-55) on page 384 of your textbook.  YOU MUST SHOW YOUR WORK

For homework,

Write Prelab and complete the ASA for Experiment #11  attachment included

• read and summarize section 10.1 on inter-molecular forces of attraction that result from molecule polarity, and
• read and summarize section 6.2 on calorimetry and heat energy changes.  Include sample exercise 6.4, 6.5 and 6.6.

Assessment today: Atomic Structure/Ionic Bonding I and Gas Behavior II

Atomic Structure FRQs due today

Study your notes and FRQs for Friday assessment on Atomic Structure, Ionic Bonding; Gas Behavior

Search online for a khan academy video on photoelectron spectroscopy. Take notes on the video including showing their examples. Also start reading big idea 1 from your AP study guide

For Homework, read and summarize sections 7.9 through 7.12

1. Finish calculating the Energy and wavelength for an electron drop from energy level 5 to 2 and 6 to 2 in the Bohr model of the atom.  Do these wavelengths match the colors you observed?  Helium has an additional line in the yellow orange region of the visible spectrum.  Does our Bohrs model work for helium mathematically?  DO THIS PART IN YOUR NOTES
2. Review section 7.4 in your textbook including the sample exercises and complete questions (49-51) on page 322 (show your work) THESE QUESTIONS GET TURNED IN ON THURSDAY

Read and summarize sections 7.3 through 7.8 in your textbook for homework tonight

Study your FRQs, Experiment #7 and class notes for the Assessment on Friday.  Reminder that the assessment will include one FRQ on gas behavior and one on volumetric analysis

 

Review gas stoichiometry and complete questions (51,53,57,59) from pages 220-221 of your textbook.. The answers are included in the back of the book, but you must show your work.

See the remind app notification

For homework,

Do an online research of the gas chemistry of hot air ballooning and scuba diving and summarize your findings

Assessment today.  Two FRQ questions: one Volumetric Analysis the other Gravimetric Analysis.  Homework is to study your practice FRQs, lab experiments and class notes

Read and summarize sections 5.1 through 5.3 on properties of gases

Experiment #19 ASA due today. 

 

Also, reminder that Chemistry AP Readiness is this Saturday.  For those going, arrive by 7:15am and bring your signed field trip slip if you have not already turned yours in

For homework,

As reinforcement of oxidation-reduction reactions, read and summarize sections 4.9 and 4.10 in your textbook and include the sample exercises 4.16 through 4.19 (showing how they are solved)

Complete the ASA for Experiment #35

For homework tonight,

The finished write-up for Experiment 4a is due today.  You already have intro, materials and methods, and your raw data.  Now carryout the calculations to determine the mass of oxygen in your product and determine the empirical formula.  In your discussion, use two of the uncontrolled errors we discussed in class to justify deviation of your mole ratio of oxygen to manganese away from the expected whole number ratio for a formula.  These errors can also be used to justify whether you plan to round the mass of oxygen up or down when you do the calculations.

Study for the assessment: it will be an FRQ on gravimetric analysis from this unit and an FRQ on composition of matter from the last unit.

The gravimetric FRQs are due today too

Review gravimetric analysis and complete questions (83-86) on page 175 of your textbook

Review your notes and textbook on precipitation reactions, and complete questions (38,40,42) from pages 172-173 of your textbook.

We completed questions 1 and 3 from your "Solution Stoichiometry" sheet.  For homework, complete questions 2,4,8, and 9 from the same sheet.  Include models, balanced equations, and the stoichiometry (identify the limiting reactant and the expected yield of product asked for in each problem).

 

Pages 61 and 62 of your textbook have the ionic charges if you need them

As review and reinforcement of solution composition, complete the two attached files: "Making solutions practice," and "Dilutions."

Homework for today was posted on Remind

Yesterday you prepared the Prelab for Experiment #6.  Tonight complete the Advanced Study Assignment (file attached)

 

The answer to question #1 is:    CuSO₄ (s)   ----->   Cu ⁺² (aq)    +    SO₄ ^-2 (aq)

Question #2 you did in lab today.  Transfer that to your ASA page

Read through Experiment #6 from the attached file and complete a Pre-lab (Introduction, materials and methods, and results data table).  NO ASA yet for this lab.

 

This experiment is based on the principles from the lab work we did in class today

Choose 3 more of the questions from today's class handout, and as we did in class and complete the following:

Assessment today (composition of mater)

• Experiment #4, BaCl2 and BaCO3
• Experiment #5, compound B is PbCl2 and compound A is PbCl4

For homework tonight, read the Experiment 4a file (attached), and complete the ASA and your Pre-lab (Introduction, materials and methods and results data tables).  For this lab you may write your materials and methods in bullet form instead of paragraph form if you prefer.  Also, you will notice that this time I did not provide data tables as in the first two labs.  You need to consider the data you are gathering and the calculations you will compete to create your own data table(s).

• complete the Formula Review (attached file)
• and on a separate sheet of paper, Read and summarize/take notes on sections 3.7 through 3.10 and copy the sample exercises 3.16 through 3.19

Experiment #13 write-up is due Tuesday.  Refer to your "Lab report format" for directions on completing a lab write-up.  In your discussion, be sure to talk about the uncontrolled error we introduced and how it affected the outcome of your findings

1. Complete the attached file on formula writing and naming compounds
2. Also finish questions 1-3 from the combustion analysis and hydrate formula sheet you were working on during lab today

For homework, complete 5 additional questions (your choice) from the class handout on "Empirical and Molecular Formulas"

 

The ASA for Experiment #13 is also due today.  Review the lab procedure so you are ready to run the Experiment #13

Read the attached file for Experiment #13 on determining the formula of a hydrated salt quantitatively.  Leave two pages in your lab notebook for the Advanced Study Assignment which we will do in class.  For homework, write up your pre-lab in your lab notebook: Introduction, materials and methods (only Part D) and results data tables (also only Part D)

Re-read Experiment #1 from the attached file, and use the "Lab Report Format" as a guide to write your "Pre-Lab" for Experiment #1 in your lab notebook.  The Pre-Lab consists of Introduction (short paragraph), Materials and Methods (you can use either paragraph form or bullet form), and Results (Data Tables for this experiment).  Start the Pre-Lab on page 3 of your lab notebook as we are going to do the Advanced Study assignment on pages 1 and 2 in class on Monday.