Chapter 4,5&19 Exam Copy

Here is the copy of the chapter 4,5&19 exam from earlier in the year.

MIDTERM

The official date of your MIDTERM is January 15th.  January 15th is an intensive day and we will take the exam first thing.  Everything discussed in chapters 1-11, 19 and Orgo is fair game.  Format will look just like a real AP exam, just a little shorter.

Molecular Geometry Virtual Lab - 2013

Here is what some of my colleagues recommend....

Lab1
Lab2
Lab3

They are basically the same.  Some more detailed than others. Some containing weird/incorrect information.  Your goal is to familiarize yourself with bonding/hybrid orbital theory/molecular geometry through hands-on model building and using an applet to virtually build the same molecules.

I am looking for

a) Molecular Formula
b) Structural Formula (when appropriate)
c) 2D Lewis Structure
d) 3D Lewis Structure (when appropriate)
e) Hybrid Orbitals used in bonding around ALL central atoms
f)  Approximate bond angles around ALL central atoms

Note:  Expanded octet polyatomic ions are difficult to discuss in terms of molecular geometry.  Ignore them.  Most of the model builders do not do well with expanded octets.  I would utilize the physical models for them.

Utilize any of the model builders to the right of this post or at the following link -

http://biomodel.uah.es/en/DIY/JChemPaint3/draw.en.htm

MC - 678 EXAM KEY

Not the prettiest way to give you the answer key, but it will work.


MC - KEY

1. A    16. C
2. A    17. E
3. A    18. A
4. D    19. D
5. B    20. A
6. C    21. E
7. D    22. B
8. C    23. E
9. C    24. C
10. D  25. A
11. B  26. C
12. D  27. E
13. C  28. A
14. A  29. B
15. C  30. A

old MC ans key

here is the key to the old MC questions

Chapter 678 Exam Prep

Here are some EXTRA practice problems


Old Exam MC

Chapter 6 MC review (Note:  This was downloaded from the New Jersey Center for Teaching and Learning)  Answers are highlighted.
Some of the material I have elected to skip and will address at a later date.  If it looks unfamiliar, ignore it.  Some of the material that was covered in the book or last year related to Dalton's Atomic Theory are considered prior knowledge.

Chapter 7 MC review (Note:  This was downloaded from the New Jersey Center for Teaching and Learning)  Answers are highlighted.
PES Spectra will be discussed at a later date.

Chapter 8 MC 1

Chapter 8 MC 2 (choose the bonding problems)

Calorimetry Virtual Lab

http://www.chm.davidson.edu/vce/Calorimetry/index.html

Use the above website to explore Calorimetry.  Please complete the first 5 virtual experiments, from Heat Capacity to Heat of Solution of Ammonium Nitrate.  Follow the instructions and use the data collected to calculate each of the values associated with the experiment.

Chapter 5 and 19 Reading

Please read though chapters 5 and 19.  You can hold off on anything after Page 830 (section 19.7) as we will come back to this and learn it with Equilibrium.

Major areas of focus include:

Enthalpy, Entropy, Laws of Themodynamics, Calorimetry, Endo vs. Exothermic Reactions, Stoichiometry with Energy Values.

You can play with the Calorimetry Virtual Lab to the right under simulations.

Inquiry Lab #1

Goal:  Determine the Mass Percent of Copper Metal in a Unknown Sample of Brass

Key concepts that must be addressed:

How do you remove the copper from the brass?

How do you determine the “amount” of copper that was removed from the brass?

Consider the data collected and how that will be helpful –

Remember – Mass % of Copper in Brass = (Mass of Copper/Mass of Brass)X100%

Requirement – You must incorporate the Spectrophotometer in your procedure

Come to class with thoughtful ideas.  DO NOT LOOK UP THE GOAL ONLINE.  The idea is for you to think, not find the answers on the internet.  If you want to look up information that is needed, like “how to remove copper from brass” ok.  

First Lab Day - This Thursday August 29th

We will be doing BOTH "gravimetric" labs linked under the Lab Work page on Day 6.  Please read them thoroughly and be ready to perform them both.

WELCOME BACK AP CHEM

STUDY....now

General Chem - FINAL EXAM REVIEW

Below is a list of links that you may find useful as you prepare for your final

Concept Study Guide
Multiple Choice Quizzes (Most of the Year)
Multiple Choice Quizzes ElectroChem
Solubility Review 1
Solubility Review 2

2011 Final - disregard concepts not covered
2011FinalKey
2012 Final - disregard concepts not covered
2012FinalKey

AP Chem - CH:6&7 Review Questions

Chapter 6 & 7 Review Problems


Answer Key for MC

AP Chem - Virutal Lab - REVIEW

Here are some virtual labs that incorporate themes we did not cover in the actual lab.  Do them.

%water in a hydrate - simple
http://mrpalermo.com/Virtual_Lab_Hydrates.html


% water in a hydrate - complex
http://elearning.classof1.com/demo/2D_Lab/Chemistry/EmpiricalFormula/EmpiricalFormula.html

REDOX titration
http://group.chem.iastate.edu/Greenbowe/sections/projectfolder/flashfiles/redoxNew/redox.html

Buffers
http://group.chem.iastate.edu/Greenbowe/sections/projectfolder/flashfiles/acidbasepH/pHbuffer20.swf

Determining formula of hydrocarbon through combustion
http://group.chem.iastate.edu/Greenbowe/sections/projectfolder/flashfiles/stoichiometry/stoic_excess_oxy.swf

General Chemistry - Quiz Related Practice Problems

http://misterguch.brinkster.net/PRA042.pdf

http://www.sciencegeek.net/Chemistry/chempdfs/EquationsWorksheet4.pdf

http://chemteacher.chemeddl.org/services/chemteacher/index.php?option=com_content&view=article&id=157

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CD8QFjAC&url=http%3A%2F%2Fwww.lmghs.org%2Fourpages%2Fauto%2F2011%2F5%2F14%2F54466605%2Fvoltaic%2520cell%2520worksheet%2520_%25204.doc&ei=lstmUd7RINij4AOYjYHACg&usg=AFQjCNEOQPn5sWFFzI878oPdi0xpNchgVQ&bvm=bv.45107431,d.dmg&cad=rja    ***NOTE - This refers to Oxidizing and Reducing Agents which I have not asked you to cover....you may ignore it.


 http://firstyear.chem.usyd.edu.au/tutorial_assignments/chem1612/ws11.pdf 
Model #1 ONLY

Key for Model #1 from above - http://firstyear.chem.usyd.edu.au/chem1612/ws11_answers.pdf

General Chemistry - Quiz Concepts

For the REDOX quiz you should be able to do the following:

• Predict products of simple (Single Replacement and Combination) REDOX reactions
• Balancing simple REDOX reactions
• Identifying which reactants are undergoing oxidation and reduction
• Determining the number of electrons transferred during the reaction

For the GALVANIC (voltaic) CELL quiz you should be able to do the following:

• Construct a cell (on paper) using given materials/chemicals that produces a predetermined  voltage
• Identify the anode/cathode and the reaction that is occurring at each electrode for a given galvanic cell
• Show the direction of the flow of electrons in the cell
• Calculate the voltage that will be produced from different combinations of chemicals

AP Chemistry Voltaic Cell Virtual Lab

Here is the Voltaic Cell Virtual Lab - This is due tomorrow.

Click here to go to the Voltaic Cell Simulation

Electrochemistry Unit - Rubric

Here is a rubric that describes the grading for the first four assessments.  Remember, 2 quizzes will still be given on Galvanic Cells and REDOX reactions.  Download the Rubric here

Acid/Base Chemistry Exam Answer Key

Here is a pdf of the Answer Key.  It is not too detailed, so if you want to meet to discuss any of it, please do so.

Reference Material for Electrochemistry Unit - GenChem

The following links contain documents that provide more structure to some of the assessment projects.  Information will be provided later associated with the prototyping phase of this project.  Please continue to meet with me and seek clarification as needed.

Historical Timeline

Simulations/Animations

Activity Series Lab

E-waste Annotated Link List

Unit 3 Exam Review KEY

Unit 3 Key

GenChem Unit 3 - Exam Review

Here are some review problems for Unit 3

Gas Laws

Neutralization Reactions

Acid/Base Dissociation

Solution Stoichiometry and pH/pOH calculations

pH practice problems - GenChem

Calculating pH's of solutions

http://misterguch.brinkster.net/PRA011.pdf

More pH calculations including resulting pH of a mixture of acid and base

http://misterguch.brinkster.net/PRA027.pdf


Both of these worksheets have answer keys attached to them.

GenChem - Acid/Base Stoichiometry

Here is a packet that contains notes, examples and assigned practice questions for stoichiometry of neutralization reactions.  This packet does not include calculations of pH, but highlights stoichiometry and molarity.

http://www.pvpusd.k12.ca.us/penhi/starodub/notes/unit3/6_notes.pdf

GenChem - Acid/Base PACKET

There is a packet in the science office on my chair/desk for you to pick up.

Acid/Base/pH Presentations and Applets

Check out the link for available acid, base and pH presentations to supplement your notes.

Get them here

http://www.freeclubweb.com/powerpoints/science/pHscale.html

ALSO!!!!!

Please check out the applets to the right of this post associated with Acids and Bases

GenChem - Updated Prezis

Check out the Unit 3 updated Prezi's under General Chemistry Study Resources.

AP problem - Equilibrium

Try number 1 on 2010 Form B.

Google it.

AP Chem - Lab Due Friday

Some tips to help with your lab.



graphs of ln(Abs) vs. time SHOULD give straight line graphs.  SHOULD.   Try eliminating some of the data, like at the beginning or at the end where it started to level off.  If that doesn't work, report what you collected knowing it SHOULD have been first order.

when looking at the rate constant under different temperatures, use the following resources (along with your book) to aid in your lab write-up

http://bouman.chem.georgetown.edu/S02/lect4/lect4.htm

http://chemistry.tutorvista.com/inorganic-chemistry/arrhenius-equation.html

http://chemwiki.ucdavis.edu/Physical_Chemistry/Kinetics/Reaction_Rates/Temperature_Dependence_of_Reaction_Rates/Arrhenius_Equation/Arrhenius_Plot

GenChem Quiz Moved to FRIDAY Feb 8th

Review and Tutorial for Stoichiometry:

Some of you have emailed with specific questions regarding stoichiometry.  Here are a few resources to help answer those questions.  Please make use of them.

Step by step PowerPoint

Boise State Tutorial - Includes Molarity Based Problems

ChemTeam Tutorial - Includes many practice problems and videos

General Chemistry

Limiting Reactant/Excess Reactant Practice Problems....

this website provides similar problems to the one we covered in class.  It also gives you the option to see how it is correctly solved, if you are struggling.

http://www.shs.d211.org/science/faculty/hlg/AP%20web%20pages/LR%20gus%20danica/problems.html

GenChem - Stoichiometry Lab

Here is a link for the stoichiometry lab.  Read it over so you are prepared for tomorrow.  Note, it is a two day lab.

Stoich. Lab

AP CHEMISTRY - Kinetics Lab

Here is a link to the procedure for our Kinetics Lab tomorrow.  Please read it over.

Kinetics Lab - Reaction of Methyl Orange with Tin (II) Chloride - Psuedo First Order Reaction

General Chemistry - Stoichiometry Tutorial

Most have you have been using the Chemtutor site that is found in the General Chemistry Links.  Here is an even shorter short-cut to get to the Stoichiometry help section.

http://www.chemtutor.com/mols.htmhttp://www.chemtutor.com/mols.htm


Some of you may need this to get through the problems found below. Answers are also posted.

Mixed Stoichiometry Problems

Mixed Stoichiometry Problems Key

AP Chem - Calculus - Steps to integrate the derived rate laws

Enjoy - Pages 5 - 10 of the linked 87 page document.  Do not ask me questions.

http://www.cosbkup.gatech.edu/group/chem780/CHAPT2.pdf

Ideal Gas Law Problems and Extra Review

Try 'em if you need 'em.

Answers are listed at the end.

http://misterguch.brinkster.net/WKS001_011_182581.pdf

 http://misterguch.brinkster.net/ideal_n_combined.pdf

Please notice that these are simple problems with little to no extra conversions needed (i.e. converting mmHg to atm).

General Chemistry - Gas Law Practice Key

Here is the answer key to the mixed gas law practice problems.  Use it as needed.

Gas Key

AP Chemistry - Kinetics Chapter

I will not be in Friday.  My daughter is ill and quarantined from day care.  Please begin to read the chapter on Kinetics (14).  It will be very difficult to understand class if it is not read.  Trust me.

General Chemistry - Gas Law Assignment

Not feeling great after this week's exam?  Neither is my daughter.  It gave her pink eye.  So I am home (wearing safety goggles).  I am however extending the opportunity to increase your grade via an assignment that is due next Tuesday - the next day I will see all of you. If you drop Tuesday, turn it in anyways or I will take 10% off for each day it is turned in late.

The assignment:  Correctly fill out the following gas law problems.  You must show ALL of your work. Mixed Gas Law Worksheet


Please use this tutorial site to help with any issue you may have.  I would specifically look at information on the laws we learned, the combined gas law, and how to convert units using STP.
ChemTeam Tutorial Gas Laws

STP stands for standard temperature and pressure, which are designated to be 1 atmosphere of pressure (1 atm) and 0 degrees Celsius.

Upcoming Exam Reminder for EVERYONE

Reminder:  All classes (genchem and ap) have exams this week.  AP - Wed chapters 10,11&13.  Chem-1 Wed and Thurs unit 2 until the CONCEPTS of Gases.  Chem 4 - Thursday during your double unit 2 until the CONCEPTS of Gases.

What is Unit 2 you may be asking.  It starts with electron configurations and continues with bonding, Lewis structures, molecular geometry, periodic trends, chemical equations, changes of state and behavior of gases.

Good Luck.

Chemical Changes Lab

Here is the lab write-up for the Chemical Changes lab activity.  Please read it over.  I will have copies printed out for you tomorrow.

AP CHEM LAB - FPD

Check out the following link and go over the procedure, especially taking note to the apparatus setup and steps needed to gather the data.  We will be using multiple types of ionic and covalently bonded molecules (in addition to the NaCl mentioned in the lab). 

http://cosm.georgiasouthern.edu/chemistry/prelabs/chem1145/FreezingPoint/Freezing1.htm

Answer Key to Huge Packet - GenChem

Here is the long awaited answer key for the packet assigned over break.

I hope you noticed that many of the problems were repeated, only worded in different ways.

Answer Key to Packet