Equilibrium (except not really)

Okay, okay.  So it may have been a bad idea to start equilibrium this quarter.  I just really, really wanted to be totally done before Q4 started.

Oh, well.  Forget it.  We'll just practice for the midterm next week.  Especially combining things that we have learned in our 8 units so far.


Homework:
  2013 AP Chemistry Exam FRQ (#3 & #5)

Unit 7 Exam

The test went well today.  Everyone made at least a B.  Good job!

On to equilibrium.

Tomorrow's lab is in the labs folder.

Homework:
  Read Chapter 13 (I think.  The one on equilibrium).  Answer the review questions at the end.

Finishing Up Kinetics

We finished up just a few things:

1. Activation energy represents the energy necessary to form a transitional state.
2. Catalysts speed up reactions by making it easier for transitional states to form.

There is an exam next time.

Homework:

  Chapter 12 AP Review

Answers: 1.D; 2.B; 3.C; 4.B; 5.C; 6.A; 7. D; 8.B; 9.D; 10.D; 11.C; 12.A; 13.B; 14.A; 15.C

Kinetics

We didn't do a lot in class due to the Grandparent's Day Mass.

Homework:
  Page 597 (52, 54, 60)

Two more rate laws and reaction mechanisms

2nd order rate laws are for two things colliding
0th order rate laws are for reactions that do not depend on the concentration of the reactants.
Intermediates are used up in subsequent elementary steps.


Homework:
  Page 596 (47, 49, 59, 61)

Rate Laws

1. Differential rate law connects concentration to rate.
2. Integrated rate law connects concentration to time.
3. Using experimental data, both k and rate order may be determined.

Homework:

  Page 594 (29, 31, 33, 35, 37)

Kind of starting rates...

We didn't get very far, but that's okay.

1. We went over the exam.
2. Talked about comets.
3. Looked at the Big Idea 4 framework
4. Discussed the conceptual concepts

Homework:

  Page 593 (23, 25, 27)

Unit 6 Exam

Today we took the exam on bonding.

If you like math, you will like our next chapter on chemical kinetics.

Homework:
  Read Chapter 12.  Answer the Review Questions.

The answer to Zujun's Question

I found a website that gives a pretty easy to follow explanation of Zujun's question about gas dissolving in liquid.

http://antoine.frostburg.edu/chem/senese/101/solutions/faq/temperature-gas-solubility.shtml

A large part of it is that Step 1 doesn't really matter for gases since their attractive forces are so much smaller.

Solutions

We have a test on Monday over the relevant information in Chapters 10 and 11.

Homework:
  No official problems.  Take a look at the framework and try to find problems (especially FRQs) that might be on the test.  There will be at least one problem involving separation techniques.

Condensed Matter

Well, the Jesus Lizard and fulgurite aside, we still managed to get through a lot of Chapter 10.  You really need to read the AP Curriculum framework in order to get a grasp on the relevant material in these two chapters.  It's less than you might think

Test is still on Monday.

Homework:

1. Look up p and n type semiconductors.
2. Chapter 10 AP Review Questions
3. Read Chapter 11

Unit 5 Exam

Bonding Exam went well, I think.  Our next unit is on intermolecular forces.  It's very short.  The exam will be 11/10.


Homework:
  Read Chapter 10.  Answer the review questions on page 497.

Molecular Orbits

Here's what you need to know from today.

1. Linear = sp hybridization
2. Trigonal planar = sp2 hybridization
3. Tetrahedral = sp3 hybridization
4. Single = sigma
5. Double = sigma + pi
6. Triple = sigma + 2 pi
7. Molecular orbital theory is confusing, but you don't really have to use it on the AP test

Homework:

  Chapter 8 AP Review Questions (Chapter 9 as well if you feel like it)

VSEPR

Valence Shell Electron Repulsion Model

3D structure around an atom

Powerful for most applications.


Homework:
  Read the chapter 9.  Answer the 10 review questions at the end.
  You may also want to practice some VSEPR structures.

Lewis Structures

1. Lewis Structures used to be easy(ish).
2. Except:
1. Boron and beryllium can go under the octet rule.
2. And anything in n=3 or higher can go over the octet rule.
3. Also, resonance
1. Sible bonds
4. Also, some compounds could have multiple structures
1. Use formal charges to work it out.
3. You really need to read the chapter before you come to class.

Homework:
  Page 409 (89, 91, 101, 105, 107)

Bonds

1. Bonds are a model.
2. You can use them to estimate enthalpy.
3. Lewis diagrams should be review for now.

Homework:

  Page 408 (65, 67, 69, 81, 83)

Here are some other John Cage pieces you might not enjoy:

Bonding

We went over the exam and started to talk a little about bonding.

Homework:

  Page 405 (27, 29, 33, 43, 49, 51)

Unit 4 Exam

So, that's the exam on atomic structure.  Bonding is next.

Homework:
  You should be reading Chapter 10 and doing the review questions on page 403.  However, what with the senior retreat, I won't be grading these this time.  You should still do them though.

Spectroscopy

Today:

1. PES (easy)
2. MS (easy)
3. Beer's Law (also easy, but we didn't do much with it yet)

More information on Beer's Law in section A17 in your book.  Here's some practice using this equation.

Homework:

  Chapter 7 AP Review Questions

Answers: 1. C; 2. D; 3. D; 4. C; 5. B; 6. B; 7. B; 8. B; 9. A; 10. C; 11. A; 12. B; 13. C; 14. D; 15. A

Periodic Trends

Today, we summed up everything about the periodic table.

1. History
2. Organization
3. Trends
1. Atomic radius
2. Ionization energy
3. Electron affinity

Homework:

  Page 346 (105-123 odd)

Electron Configuration

Today:

1. Ebola
2. Orbitals
3. Electron configuration
4. Lewis Dot Diagrams

Homework:

  Page 345 (79-93 odd)

Quantum Mechanical Model

Today we learned about the quantum mechanical model of an atom, I guess.  We also learned about other things.

1. No one knows where electrons actually are.
2. Time travel is possible.
3. You guys need to watch more Star Trek.

Homework:

  Page 342 (40-48 even); Page 344 (71, 73)

Light

After going over the test, we didn't have a whole lot of time left, but we did talk a bit about light.

1. speed = wavelength x frequency
2. Energy of a photon = Plank's constant x frequency

Homework:

  Page 342 (39-51 odd)

Unit 3 Exam

Well, it's clearly our lowest scoring exam so far.  That's to be expected.  Chemistry gets harder.

I am sorry for those of you whose day was ruined.  I am not sorry for the test itself.  The AP test is very tricky and very difficult and we need to get into shape.

That being said, this was the first time that we saw an actual AP FRQ.  I suppose it would be unfair of me to grade as if you should have known what to expect (although I did mention that I would probably draw questions from old AP Exams).

For this test and this test only, I will allow test corrections.  This will allow you to regain half of the points that you lost.

Example:  You made a 70 after the curve.  You complete corrections and can make up to an 85.  We'll go over this process next time in class.

Don't forget the lab tomorrow.

Homework:

  Read chapter 7.  Complete the review questions at the end of the chapter.  Remember to supply the context for the problem, not just an answer.

Last bit of Thermochemistry

Today we reviewed:

1. Calorimetry
2. Hess's Law
3. Standard Enthalpies of Formation

There is a test next time.

Homework:

  Chapter 6 AP Review Problems

Answers:  1, C; 2. A; 3. B; 4. B; 5. C; 6. D; 7. B; 8. D; 9. D; 10. D; 11. B; 12. C; 13. C; 14. A; 15. A

Thermodynamics

Today we:

1. Went over the exam
2. Reviewed energy concepts
3. Did some simple energy problems
4. Began calorimetry

Next class, I will be gone for the junior retreat.  Please work diligently and get through "Standard Enthalpies of Formation"

Homework:
  Page 286 (35, 37, 41, 43, 45)  Remember to write the question as well as show all your work.

Homework for Thursday:
  Page 287 (53, 55, 71, 73, 75)

Unit 2 Exam

Done with gas laws... for now.

The next chapter is about thermochemistry.  There's a really cool (get it?) documentary about temperature that you should watch if you have the time.  Nova: Absolute Zero

Homework:
  Read chapter 6 and answer the review questions on page 284

More Gas Law Practice

Just a few things were left.

1. KMT
2. Effusion
3. We also froze a balloon with liquid N2.

There is a test next time.

Homework:

  AP Review Problems in Chapter 5

Answers:  1. C; 2. D; 3. A; 4. B; 5. D; 6. A; 7. B; 8. B; 9. C; 10. D; 11. B; 12. C; 13. A; 14. C; 15. A; 16. D

Molar Gas Things

Today we covered some molely things related to gases.

1. Molar volume of a gas
2. Molar density of a gas
3. Partial pressure
4. Mole fraction (not actually a fraction)

And we combined gas laws together with everything else!  Hooray!

Homework:

  Page 237 (65-77, 83-89) odds

Gas Laws

Pretty simple today.

1. We went over the exam
2. We reviewed gas laws (seems good so far).

We'll go over more complex things like partial pressure next time.

Homework:

 Page 236 (43-59 odd)

Unit 1 Exam

First real exam done!  I should have them graded by next class.  Then, we'll quickly go over them and start the new unit.

It's another short one, so be ready to move.

Homework:
  Read Chapter 5 and answer the review questions on page 231

Today's Music:

Redox Reactions

So, that's it.  Nothing more to learn before the next exam.

1. Neutralization (the easy kind).
2. Redox
1. Review the oxidation state rules
2. Balance the electrons first
3. Then do normal balancing
4. If you need more practice, try p 184 (79-88)

There is an exam next time.  Don't forget the lab this afternoon.

Homework:

  Chapter 4 AP Review Questions

Precipitations

The test is postponed until Tuesday.  We'll work on redox on Thursday.

Today's work:

1. Molarity
2. Precipitation
3. Solubility rules
4. Neutralization

Don't forget the gravimetric lab on Thursday afternoon.  Show up on time to finish early.

Homework:

  Page 182 (45-61 odd)

Today's Music:

Molarity

So the test went well.  Everyone made an A!  Keep up the good work.

We started to go over Unit 1 in class.  That's Chapter 4 of the book.  The test will be Thursday.  I know it's fast, but there's not really anything too new.  Please read the chapter so that we can really get to it.

Homework:
  Page 181 (27-39 odds)

Unit 00 Exam

We took the exam today.  I should have it graded by Friday.

Don't worry, guys.  I'm sure that you did fine.

No lab tomorrow.  We'll start that next week.

Homework:
  Chapter 4 Review Questions #1-10


Today's Music:

Summer Homework Review

Today was fairly low key.  We just did introductions and spent some time practicing material that will be on the summer homework exam.

Homework:
  Study for said exam


Today's Music

10 Minute Day

I enjoyed seeing you all in class on Friday.  We will have longer next week for introductions and class procedures.

Homework:

  Please bring the following with you on Monday:

       Supplies

       Signed syllabus page

       Signed safety contract page

You can find those documents on the website: 

https://sites.google.com/a/saviochs.org/mr-goertz-science/ap-chemistry/ap-chemistry-syllabus