Wednesday, December 15, 2010

ADVANCED AND HONORS CHEMISTRY

If you would like to work on SOL Practice questions, go to the following website and select Chemistry. You can also select a particular category of questions or you can select all.

Jefferson Lab SOL Practice

AP CHEMISTRY

You can access the Practice Midterm Exam by clicking here.

Friday, December 3, 2010

Honors Chemistry

If you missed class today, we started a new Unit on Attractive Forces and Phase Changes. The answers to the packet can be found in the Honors Chemistry section of my website, or click here.

Advanced Chemistry

Quiz on Monday on Stoichiometry!! You should be able to balance equations. You should be able to convert from moles of one substance to another substance (one step). You should also be able to convert from grams of one substance into grams of another substance (three steps). Study your practice quiz!

AP Chemistry

Study Chapters 8 and 17. make sure you understand all of the homework problems. E-mail me if you have questions.

Thursday, December 2, 2010

Honors Chemistry

Today we took a quiz on the ideal gas law and gas stoichiometry. We will be starting a new unit (Attractive Forces and Phase Changes) tomorrow. If you were absent and missed the quiz on KMT and gas laws (from Monday November 22rd), please come in asap to take care of that.

Advanced Chemistry

Your homework is to complete the 3rd quarter assessment that was given to you at the end of class today!

AP Chemistry

Your job right now is to do two things: (a) Review the material from Chapter 8 (Thermochemistry). The answers to the Chapter 8 homework can be found here. (b) Work on the HW problems from Chapter 17. They are the following problem numbers: 5, 7, 11, 13, 17, 19, 21, 25, 27, 29, 33, 35, 41, 47, 55, 57, 77, and 79. The Chapter 17 review guide can be found here, and the answers to the Chapter 17 homework questions (no peeking until you have attempted them) can be found here.

Tuesday, November 23, 2010

Enjoy the Thanksgiving Break!

Here are some guidelines for you to think about.

AP Chemistry - I expect you to have read Chapter 8 and done the problems that were assigned to you from the book: 1, 3, 5(a-d), 7, 15, 17, 19, 23, 25, 31, 32, 33(a), 37, 39, 41, 43, 66, & 69. The Chapter 8 Review Guide can be found here.

Advanced Chemistry - You should review the stoichiometry problems that you were given in class on Tuesday. The stoichiometry handouts and answers can be found here.

Honors Chemistry - You should review the information about the KMT and Gas Laws. If you were absent from class and did not get the Ideal Gas Law and Gas Stoichiometry packet, you can find it here. In addition, the answers to this packet can be found here.

Tuesday, November 16, 2010

Today in Advanced Chemistry I began to teach about how different reactions are classified. Students have been balancing equations for several class periods. Now they are learning the terms "synthesis," "decomposition," single replacement," double replacement," etc.

In Honors Chemistry students took a quiz on Stoichiometry. Tomorrow I will begin a new unit on Gases. 

Friday, November 12, 2010

AP CHEMISTRY HOMEWORK

Answer the questions from the MCQ related to Chapter 7, which can be found here.
Also, you can try to work on problems from the textbook located at the end of Chapter 7. Click here for answers to many of the odd-numbered problems from Chapter 7.

Thursday, November 11, 2010

HONORS CHEMISTRY HOMEWORK

Your homework is to work on the Stoichiometry Practice worksheet, which can be found here.
Answers to the packet on Stoichiometry Calculations can be found here.

ADVANCED CHEMISTRY HOMEWORK

Your homework is to work on the balancing equations worksheet that you received in class today.
If you need help with this or you would like to check your answers, click here.

AP CHEMISTRY HOMEWORK

Do the following problems from your textbook:
1, 3, 5, 7, 11, 13, 15, 17, 19, 21

Tuesday, November 9, 2010

HOMEWORK

Advanced Chemistry
Your homework is to write the formulas for all the compounds listed on that "March Madness" worksheet. In each box, four compounds are covalent and four compounds are ionic.

Honors Chemistry
Study your notes on chemical reactions for tomorrow's quiz. Your will be expected to write chemical formulas from the chemical names, balance the equation using lowest possible whole numbers, and classify the reaction as being a synthesis, decomposition, single replacement, double replacement, neutralization, or combustion.

Monday, November 8, 2010

ADVANCED CHEMISTRY HOMEWORK

Review the shapes that we learned in class today. Be prepared to take a quiz that looks like this.

AP CHEMISTRY HOMEWORK

Please read sections 7.2 and 7.4 in your textbook. Then do those worksheets to help you organize and understand the concepts of molecular geometry and orbital hybridization. If you want answers/help, you can look at the PowerPoint file located here.

Friday, November 5, 2010

HONORS CHEMISTRY HOMEWORK

Soon I will post the answers to the Chemical Reactions packet that we have been working on.Your homework was to finish the last page of the packet, which tests you to see if you understand how to write, balance and classify chemical equations. I have posted the PowerPoint file that I was using in class here. It guides you through the process somewhat. E-mail me if you have questions! Have a good weekend!

ADVANCED CHEMISTRY HOMEWORK

It would be a very good idea to review the PowerPoint file on Drawing Lewis Dot Structures, which I have posted here on my website. Today in class we practiced drawing the Lewis Dot structures for polyatomic ions. All of the answers to the Covalent Bonding packet can be found here.

Then we talked about molecular geometry and bond angles. Helpful Information can be found here and here.

The homework was to do the following assignment, which can be found here.

Please e-mail me if you have any questions! Have a great weekend!

AP CHEMISTRY HOMEWORK

Study for your Chapter 6 Test, which will be on Monday. Answers to the Chapter 6 Practice test have been posted here. Also, please read through Chapter 7, including the review guide, which has been posted here.

Wednesday, November 3, 2010

Honors Chemistry - Balancing Chemical Equations

Today we reviewed the midterm and then worked on balancing chemical equations. For the answers to the worksheet that was given out in class today (with 26 chemical reactions on it), click here.

Your homework is to write balanced chemical equations for problems 1 - 12 under the heading "Types of Chemical Reactions" from the packet that was given to you at the very end of class today.

Advanced Chemistry - Covalent Bonding

Today we reviewed the midterm and then worked on drawing Lewis electron dot structures for various covalent molecules. For homework, you should try to draw as many molecules as you can on the Covalent Bonding packet.

AP Chemistry - Chapter 6

On Friday we will review the answers to the Chapter 6 Practice Test, which can be found here.

If you need to review the answers to the Chapter 6 FRQ, you can find them here.

Thursday, October 28, 2010

Grading Period Ends Tomorrow!

For students who are taking chemistry as a semester course, the first part of your midterm exam was given yesterday on computers. The second part of the midterm exam was given in class today (on paper). Tomorrow is the last day for you to get caught up with all of your late or missing work! The grading period ends tomorrow, October 29th. We will begin the new grading period when you come back to school on Wednesday, November 3rd.

Tuesday, October 26, 2010

Midterm Review

The answers to the practice midterm from class today have been posted here. Good luck studying for your midterm, and let me know if you have any questions. On Wednesday you will be taking the 1st part of the midterm on the computer. On Thursday you will take the 2nd part of the midterm on paper.

Monday, October 25, 2010

AP Chemistry Chapter 6 Homework

These problems from the end of Chapter 6 in the textbook were assigned for homework:
1, 2, 3, 5, 6, 9, 10, 17, 18, 21, 22

Saturday, October 23, 2010

Happy Mole Day!

Well, I hope you are enjoying your Saturday. Don't forget to celebrate Mole Day! Since it has been several days since my last post, I'll give you a brief summary of our chemistry activities.

AP Chemistry
On Wednesday we finished up our work on Chapter 5 (Gases), including a couple demonstrations of how to calculate the molar mass of a substance. In one demonstration, a volatile liquid (methanol) was heated in a flask placed in a boiling water bath. In another demonstration, butane was released from a disposable lighter underwater. On Friday I gave out the Chapter 5 Test. Students began the test in class and they were instructed to take it home to finish it on their honor.

Advanced Chemistry
On Wednesday we did a lot of practice with writing formulas for ionic compounds. I encouraged students to learn "The Polyatomic Ion Song" to help them remember the eight polyatomic ions.

OH is hydroxide, ClO3 chlorate,
Their charges are both minus one like NO3 nitrate.
Carbonate is CO3, chromate CrO4,
Their charges are both minus two like sulfate SO4.
NH4, NH4, NH4 plus one,
It's the only cation; it's called ammonium.
Phosphate is PO4, charge is minus three,
Polyatomic ions are so fun for you and me!

Besides knowing how to go from the name to the formula and vice versa, we also talked about how to calculate the molar mass of a compound. The molar mass is the mass of one mole of that substance. We calculate molar mass by adding up the atomic masses of all the elements in the formula. Conversions from grams to moles involve dividing by the molar mass, and conversions from moles to grams involve multiplying by the molar mass.

On Thursday I gave a quiz on ionic compounds. Many students still need to finish this (and some students need to start it!) On Friday we celebrated mole day and discussed the concept of a mole. I talked about the fact that Avogadro's Number (6.02 x 1023) represents the number of particles in one mole. These particles can be called atoms, molecules, or formula units, depending on the type of substance. We use atoms when we are talking about an element (like Na). We use molecules when we have a covalent compound (like H2O). We use formula units when we have an ionic compound (like CaCl2).

Honors Chemistry
On Wednesday I gave a quiz on covalent bonding that included names/formulas, Lewis dot structures, structural formulas, empirical formulas, and molecular formulas. On Thursday I introduced the topic of moles as we prepared for Mole Day. On Friday we had our "Molympics," in which students worked in teams to perform various mole-related challenges. Hopefully students feel more comfortable with moles and mole conversions. We will definitely see more practice with this skill throughout the semester.

On Monday I will begin to review for the Midterm Exam with students in Advanced & Honors Chemistry. Those students will take their midterm exam over two days, beginning on Wednesday October 27th. The end of the 9 weeks grading period is on October 29th.

Tuesday, October 19, 2010

Ionic and Covalent Bonds

Advanced Chemistry
Today we practiced writing ionic compounds. When a positive ion and a negative ion are put together, the total charge of the compound should be zero. Some examples of binary ionic compounds are barium nitride (Ba3N2), aluminum chloride (AlCl3) or sodium sulfide (Na2S). Please memorize the eight polyatomic ions that I taught you in the song. Your homework is to work on the packet that we started today in class. Try to finish as much as you can with the names and formulas.

Honors Chemistry
Today we did more work with the concept of empirical and molecular formulas. We also reviewed the rules for naming covalent compounds. You should be able to write the formula from the name and vice versa. We reviewed the procedure for drawing Lewis dot structures as well as how to identify the molecular geometry. In our lab experiment today, we measured the mass of a copper sulfate hydrate salt and then heated it in a crucible to drive off all the water. You should be able to calculate the mass of water lost. You should convert the mass of water into moles. Then convert the mass of the anhydrous CuSO4 into moles. If you calculate the mole ratio of H2O to CuSO4, you should get a number that is approximately 5.

Monday, October 18, 2010

More Bonding

AP Chemistry
Today I showed how to answer many of the Chapter 5 FRQ. The answers have been posted here. The homework is to do the Chapter 5 Practice Test. We will go over this in class on Wednesday and hopefully take the test on Friday.

Advanced Chemistry
Today I explained in lots of detail how to write the formulas for ionic compounds. We worked with simple binary ionic compounds like MgCl2 and Na2O. We also worked with ionic compounds that contain a polyatomic ion, like Na3PO4. Learn that polyatomic ion song!!

Honors Chemistry
Today I finished talking about the March Madness bracket, which was a good review of chemical formulas. Then I went over a new packet that discussed the differences between molecular, structural, and empirical formulas. The answers to this packet have been posted here. Tomorrow we will do a lab experiment involving hydrates.

Thursday, October 14, 2010

Bonding

Advanced Chemistry
Tomorrow we will begin to discuss ionic bonds. Here is an example of what I am talking about.

Honors Chemistry
Tomorrow we will begin to discuss covalent naming rules. Here is an example of what I am talking about.

Wednesday, October 13, 2010

PSAT testing day

AP Chemistry
Make sure you understand everything that has been given you from Chapter 5, including book homework and AP MCQ. On Friday I will show the juniors the lab experiments that were done in class today.

Advanced Chemistry
Study for your Unit 5 Test!

Honors Chemistry
Answers to the packet on Covalent Bonding have been posted here. Tomorrow we will look at molecular geometry, and talk about shapes such as tetrahedral, trigonal planar, linear, pyramidal, and bent.

Tuesday, October 12, 2010

Periodic Table and Chemical Bonding

AP Chemistry
Answers to the Chapter 5 MCQ have now been posted. Tomorrow we will have a long class because of PSAT testing, so be prepared to do lots of practice as well as some lab experiments.

Advanced Chemistry
Study for your Unit 5 Test on the Periodic Table. Look over your practice test and review your notes. Answers to many important documents can be found here.

Honors Chemistry
The PowerPoint file that I used today to review Lewis dot structures can be found here.
Tomorrow we'll talk more about this topic, as well as molecular geometry and shapes.

Friday, October 8, 2010

Enjoy the long weekend

AP Chemistry
Work on the MCQ related to Chapter 5. E-mail me if you have any questions. We don't have class again until Wednesday, but even then I lose about half of you to PSAT testing!
Advanced Chemistry
Do as much as you can to complete your Unit 5 Practice Test. Look over your notes, and study all the information you have learned about the periodic table. Come in on Tuesday with your questions!
Honors Chemistry
Sorry to have missed your class two days in a row. I hope you felt prepared for your Ionic Bonding Quiz. I'll grade them on Monday and go over them with you when I see you on Tuesday. Work on the first part of the packet on Covalent Bonding and Lewis Dot Structures. If you need advice for how to draw Lewis dot structures, please e-mail me. I'd be glad to help.

Thursday, October 7, 2010

Sorry I missed you!

Sorry that I was not in class today. I had a meeting with other county science teachers, and we were working on ways to help improve the quality of science education. I hope you enjoyed the movies on Hydrogen and the Umbrella Assassin.

Honors Chemistry: Please prepare to take your quiz on Ionic Bonding tomorrow! Here are the answers to the practice packet that we went over in class on Wednesday.

AP Chemistry Homework


Answer the following questions from Chapter 5:
45, 49, 51, 59, 61, 63, 65, 69
Here is the PowerPoint to show you the answers to these.

If you would like to do more practice problems, you can work on these AP MCQ related to Chapter 5. I'll hand these out to you tomorrow. 

Wednesday, October 6, 2010

Periodic Trends and Ionic Bonding Quiz

Advanced Chemistry
We will continue to explore and study the trends of the periodic table. Look for a Unit 5 Practice Test very soon!
Honors Chemistry
The Quiz on Ionic Bonding is planned for Friday. Review your polyatomic ions and practice writing names and formulas. If you need more help, you can try this link.

Tuesday, October 5, 2010

Periodic Table and Ionic Bonding

AP Chemistry
Read Chapter 5 and do your textbook homework. See yesterday's post for the problem numbers. If you need help, look at this PowerPoint file.

Advanced Chemistry
Review the information on Atomic Radius trends. More information and a lab experiment tomorrow!

Honors Chemistry
Finish the Ionic Bonding Practice Packet. Use the packet to help you review and study. Be ready for a quiz at the end of the period tomorrow.

Monday, October 4, 2010

Gases, Periodic Table, and Ionic Bonds

AP Chemistry
Finish up the Chapter 4 Test tonight and give it to me in the morning.
The homework for Wednesday is to Read over Chapter 5 and answer the following questions from the end of the chapter: 5, 7, 11, 13, 15, 17, 23, 25, 29, 31, 33, 35, 41, and 43.
If you need a copy of the Chapter 5 Review Guide click here.

Advanced Chemistry
We just started the periodic table today by trying to predict the properties of two missing elements in our "fake" periodic table. More notes tomorrow on the periodic table and understanding periodic trends.

Honors Chemistry
We just started a unit on Chemical Bonding today. We began to look at ionic bonds. Practice putting together binary ionic compounds, using the "criss-cross rule" whenever necessary. Finish the practice section of the worksheet entitled "Ionic Bonding part 2." To help you learn the polyatomic ions, you can practice the song that I taught you today. How many of you can you sing it without looking at the words?

Thursday, September 30, 2010

Tests!

AP Chemistry
Study for Chapter 4 Test. Come in tomorrow with your questions!
Advanced Chemistry
Study for your Unit 4 Test. Review the electron configurations and study your practice test.
Practice test answers and helpful information can be found here.
Honors Chemistry
Study for your Unit 5 Test. Review the periodic table trends and study your practice test.
Practice test answers and helpful information can be found here.

Wednesday, September 29, 2010

Test Preparation

AP Chemistry
Study for your Chapter 4 Test, which will be on Monday. Look over the Chapter 4 Practice Test, MCQ, and FRQ. On Friday we'll do a final review, so bring your questions to class.

Advanced Chemistry
We will continue to practice electron configurations. We will work on a Unit 4 Practice Test tomorrow and then possibly take our Unit 4 Test on Friday.

Honors Chemistry
We will continue to talk about periodic table trends, in terms of atomic radius, ionization energy, and reactivity (metals and nonmetals). We will work on a Unit 5 Practice Test tomorrow and then possibly take our Unit 5 Test on Friday.

Tuesday, September 28, 2010

Electrons and the Periodic Table

Advanced Chem

Today we discussed how light is emitted by electrons as they travel from the excited state back toward the ground state. We studied the electromagnetic spectrum and talked about the relationships between wavelength, frequency, and energy. We also looked at the concept of electron configuration. We'll get more practice with this tomorrow.

Honors Chem

Today we tried to emulate Dimitri Mendeleev by arranging elements according to increasing atomic mass and then finding patterns in chemical reactivity. We also predicted the properties for elements in our "fake periodic table" that had not been discovered yet. We'll take a closer look at two important trends tomorrow: atomic radius and ionization energy.

Monday, September 27, 2010

Monday Assessment

AP Chemistry

Today we reviewed the answers to the Redox Titration Pre-Lab Questions. The answers can be found here. We also did a lab activity on qualitative analysis, in which we identified twelve unknown solutions on the basis of various properties. These included acid-base reactions and precipitation reactions. Your homework is to work on the Chapter 4 Practice Test, which can be found here. We will do the redox titration lab on Wednesday.

Advanced Chemistry

Today you all took a "1st Quarter Assessment" and most of you wrapped up your Unit 3 Test. Those who still have not finished some questions on the Unit 3 Test will need to come to Mustang Morning to do it.

Honors Chemistry

Today you all took a "1st Quarter Assessment" and the Unit 4 Test. A few of you who still have not finished some questions on the Unit 4 Test will need to come to Mustang Morning to do it.

Friday, September 24, 2010

Honors Chemistry

Your homework is to study for the Unit 4 Test on Monday!

Here is some helpful information for you as you are studying:

Color-Coded Periodic Table with s, p, d, and f blocks

Answers to the Unit 4 Practice Test

Answers to the SOL Practice #4

Email Mr. Farabaugh with your questions!

AP Chemistry Homework

Your homework is to answer the Pre-Lab Questions for the redox titration lab on Monday.
If you didn't pick up the lab handouts, they can be found here.
If you can work on the AP MCQ for Chapter 4, that would be great. They can be found here.

Thursday, September 23, 2010

Unit 3 and Unit 4

Advanced Chemistry

Study for your Unit 3 Test.

Honors Chemistry

Review your notes on Unit 4...Test on Monday

AP Chemistry Update

I have posted the answers to the Chapter 4 FRQ here. I have also prepared some Multiple Choice Questions that are related to Chapter 4. This will be handed out in class tomorrow, but if you'd like to take a look at them, they are posted here.

The homework assignment for Monday's class will be to answer the Pre-Lab Questions for the Redox Titration Lab. Again, this will be handed out in class tomorrow, but if you'd like to take a look at the information for the Redox Titration Lab, it is posted here.

Wednesday, September 22, 2010

Chapter 4, Unit 3, and Unit 4

AP Chemistry
Work on the AP FRQ related to Chapter 4, which can be found here.

Advanced Chemistry
Study for your Unit 3 Test, which may get pushed back to Friday.

Honors Chemistry
Do the Unit 4 Practice Test. If you are feeling lost or confused, try looking at the Power Point files, which can be found here. Also, if you happened to leave class early today, the answers to Electron Configurations part 2 can be found here.

Tuesday, September 21, 2010

Atoms and Electrons

Advanced Chemistry

Tomorrow in class we will go over the Unit 3 Practice Test. The test should be on Thursday.

Honors Chemistry

Today I introduced the topic of electron configurations. We talked about light and the EMR spectrum. Excited electrons are responsible for the emission of different colors of light. We'll have more practice with this tomorrow.

AP Chemistry Homework

Answers to Chapter 4 homework on redox chemistry have now been posted here.

Monday, September 20, 2010

Isotopes of Beanium and Unit 3 Test

AP Chemistry

Answer the Pre-Lab questions for the Chapter 4 Lab Experiment.
Answer the free response questions for 2004B #5 from the FRQ packet.

Advanced Chemistry

Continue working on your SOL Practice #3 packet. We will go over the Analysis Questions from the "Isotopes of Beanium" lab tomorrow, and most likely I will discuss all of the questions from SOL Practice #3 as well.

Honors Chemistry

Having just given the Unit 3 Test today, you only have to look over the packet entitled "Electron Configuration part 1." I will teach you more about this material in class tomorrow.

Friday, September 17, 2010

Redox Chemistry and Atomic Structure

AP Chemistry

Answer the following questions from Chapter 4: 41-50, 55-59, 65, 68

Advanced Chemistry

Answer Questions 1-18 in the SOL Practice #3 packet.

Honors Chemistry

Study for the Unit 3 Test. Answer the questions in the SOL Practice #3 packet.
If you need more help with calculating molar masses, click here and here.

Thursday, September 16, 2010

UNIT 3 TEST

Advanced Chemistry

Study the notes you took today in class about the 5 important figures in the history of atomic theory:
Democritus, Antoine Lavoisier, John Dalton, J. J. Thomson, and Ernest Rutherford

Honors Chemistry

Finish up your Unit 3 Practice Test, which can be found here. We will review this tomorrow and make sure you are prepared for the Unit 3 Test on Monday.

Wednesday, September 15, 2010

Atomic Theory

AP Chemistry

Answer these questions in your textbook at the end of Chapter 4: 21-32

Advanced Chemistry
Try to find one fact about each of these people:
Democritus
Antoine Lavoisier
John Dalton
J. J. Thomson
Ernest Rutherford

Honors Chemistry
Tomorrow we will discuss radioactivity, nuclear decay, and half-life. We will most likely begin to work on a Practice Test for Unit 3, and the Unit 3 Test should be on Monday.

Tuesday, September 14, 2010

Subatomic Particles

Advanced Chemistry

Study for your Unit 2 Test on Matter.

Honors Chemistry

Review the information that you learned today about protons, electrons, and neutrons. Be prepared for a short assessment on this topic.

Monday, September 13, 2010

Chemists Always Have the Best Solutions

AP Chemistry
Answer the following problems at the end of Chapter 4 in your textbook:
1a, 3ab, 5ab, 7, 8, 11-16, 17c, 20

Advanced Chemistry
Complete your Unit 2 Practice Test. We'll be going over it tomorrow in class, and the Unit 2 Test is scheduled for Wednesday.

Honors Chemistry
The introduction to Unit 3 (Atomic Theory) has begun, with an overview of 5 important figures in the history of atomic theory. Review what you learned in class today, and tomorrow we will explore the properties of subatomic particles.

Saturday, September 11, 2010

AP Chapter 3 Practice Problems

AP Chemistry students note that additional practice problems for Chapter 3 have been posted here.

Friday, September 10, 2010

Stoichiometry, Matter, & Atomic Theory

AP Chemistry

Study for your Chapter 3 Test. I'll try to post additional practice problems this weekend.

Advanced Chemistry

On Monday we will finish up the unit on Matter (or come very close). The Unit 2 Test should be on Tuesday or Wednesday.

Honors Chemistry

Please gather information about the following people who are important to the field of Atomic Theory:

Democritus, Antoine Lavoisier, John Dalton, J. J. Thomson, and Ernest Rutherford

Thursday, September 9, 2010

UNIT 2 TEST

AP Chem

I have posted the answers to the Chapter 3 Practice Test here. So tomorrow in class, our review should be efficient, since you will hopefully have read this blog post and then checked out the answers to your questions.

Advanced Chem

Today we did a lab on separation techniques and we finished up the notes on "Introduction to Matter." The PowerPoint file that goes with the notes can be found here. Tomorrow we will do a lab on physical and chemical changes.

Honors Chem

Study for your Unit 2 Test. Answers to the Practice Test can be found here.

Wednesday, September 8, 2010

Matter Matters

AP Chem

Do as much of the Chapter 3 Practice Test as you can. Be prepared to ask your questions about the ones that you couldn't answer on Friday.

Advanced Chem

We will be studying "Matter" on Thursday and Friday, doing experiments that relate to separation techniques (chromatography, filtration, distillation, electrolysis) and physical/chemical changes.

Honors Chem

Finish up the packet on Conservation of Mass and Percent Composition. You will probably find this PowerPoint file on Matter helpful to you as you answer the questions.

Tuesday, September 7, 2010

Happy Labor Day! Now Get Back to Work!

AP Chem
Answer the pre-lab questions for the lab tomorrow. Get most of the FRQ done. MCQ answers have been posted here.

Advanced Chem
Study for your Unit 1 Test.

Honors Chem
We will do more lab investigations tomorrow, covering physical and chemical changes and separation techniques. Look for a Practice Test to be handed out to you tomorrow, with a Unit 2 Test planned for this Friday.

Friday, September 3, 2010

UNIT 1 TEST

It's Labor Day on Monday. Chemistry students, make sure you are "laboring" on the following assignments.

AP Chemistry - Your homework is to answer the prelab questions on empirical formula calculations. Also work on the MCQ from Chapter 3. Answers are posted here. Also work on the FRQ from Chapter 3. We'll go over those in class on Wednesday after we do the lab.

Advanced Chemistry - Your homework is to do the Unit 1 Practice Test so that we can go over it on Tuesday. The Unit 1 Test will be on Wednesday.

Honors Chemistry - Well, since we just finished the Unit 1 Test today, I'm not sure what you should be "laboring" on. After our introduction to matter, I guess you can start to look for examples of elements, compounds, and mixtures all around you. On Tuesday we will explore physical and chemical changes, as well as separation techniques.

Thursday, September 2, 2010

Scientific Method & Measurement

2nd Period (Advanced Chem)

Today we did lots of practice with 1-step, 2-step, and 3-step dimensional analysis problems. We finished up the packet on Scientific Notation & Dimensional Analysis. Tomorrow we will wrap up the material for unit 1, including a lab activity featuring alka-seltzer tablets. You will get a Practice Test for Unit 1 tomorrow.

4th Period (Honors Chemistry)

Today we finished up the packet on Scientific Notation & Dimensional Analysis and we discussed variables and controls through the example of alka-seltzer tablets. We went over the Unit 1 Practice Test. Tomorrow you will take your Unit 1 Test.

Wednesday, September 1, 2010

Dimensional Analysis

In Advanced and Honors Chem today, we learned a method for converting units called "dimensional analysis." This is a very important technique that you will use all the time in chemistry class. Review the examples from the PowerPoint slide show here
Homework for today is the following:

AP Chem
Do the following Chapter 3 problems: 47, 51, 53(a, b), 55c, 57(a, b), 59, 63, 65, 77

Advanced Chem
Review your notes from class today, especially on dimensional analysis. Answer questions 1-10 from the SOL PRACTICE #2 packet

Honors Chem
Learn those metric prefixes discussed in class today, and look over the dimensional analysis problems that we did. I will be giving a practice test tomorrow, and there will be a Unit One Test on Friday.

Tuesday, August 31, 2010

Graphs and Density

Today in 2nd period and 4th period, we started with a do now assignment on the concepts of precision, accuracy, and sig figs. We went over problems from SOL Practice #1 and then took some notes on graphing. Today we did a lab involving water displacement, where we measured mass and volume for rubber stoppers. Students can use this mass and volume data to calculate the density of the stoppers.

The homework for today is the following:

Period 2 (Adv Chem):
Answer Questions 11-18 in SOL Practice #1, which can be found here.

Period 4 (Hon Chem):
Answer Questions 1-18 in SOL Practice #2, which can be found here.

Monday, August 30, 2010

Accuracy and Precision

Today in 2nd period and 4th period, we talked about the definition of accuracy and precision. The information that was presented in class today was from the packet found here. We also talked about the concept of significant figures, and I taught the Atlantic & Pacific Rule. We stopped at #20 in the packet.

The homework for today is the following:

AP Chem:
Read Chapter 3, sections 3.1 through 3.3. Do the following problems at the end of the chapter: 5, 13, 15, 19a, 21c, 29, 31, 33, 35, 37c, 43, 45

Period 2 (Adv Chem):
Answer Questions 1-10 in SOL Practice #1, which can be found here.

Period 4 (Hon Chem):
Answer Questions 1-18 in SOL Practice #1, which can be found here.

Friday, August 27, 2010

TGIF!

AP Chem
I have posted the answers to the Chapter 1 & 2 Practice Test here.
You will also see a document entitled "Polyatomic Ions You Should Know."
E-mail me if you need additional practice problems or if you have any questions about Monday's Test on Chapter 1 & 2.

Advanced Chem
Today we wrapped up the lab experiment with the colored liquids. We discussed the fact that a graduated cylinder is more precise than a beaker because it has smaller markings/divisions on it. On Monday we will go over the results of the math assessment, and you will learn about precision and accuracy.

Honors Chem
Today we wrapped up the lab experiment with the colored liquids. We discussed the fact that a graduated cylinder is more precise than a beaker because it has smaller markings/divisions on it. I have posted the packet on precision and accuracy here. Your homework was to do the following problems in this packet: 3, 4, and 5, and the graph on the last page. On Monday we will go over the results of the math assessment, and you will learn about precision, accuracy, and significant figures.

Thursday, August 26, 2010

Colorful Chemistry



Here is a summary of today's activities in Period 2 (Adv. Chem.) and Period 4 (Hon. Chem.).

I collected the signed syllabus sheets, and then students took a lab safety quiz.  Today's lab experiment was on the density of colored liquids. Watch the YouTube video above.

Tonight's homework is to write a detailed procedure for determining the density of a liquid. Be specific! Be clear! Write your procedure in a way that someone could be able to follow your instructions.  Students took a math assessment today, which should help me determine what they can do and what I will need to teach. Math skills are definitely important in chemistry! Thanks to everyone for a great day. I look forward to seeing everyone tomorrow (Friday!)

Wednesday, August 25, 2010

Okay, Let's Get Started

Thanks to everyone for a great first day. I really enjoyed meeting everyone, and I'll do my best to learn all your names. Here's a summary of important information for each class:


AP Chem
Read Chapters 1 & 2 in your textbook and the Ch. 1 & 2 Review Guides. Get the syllabus sheet (with e-mail information) filled out and signed by you and your parents. Look over the Safety Contract and be ready for a quick, easy quiz on lab safety. Complete the Ch. 1 & 2 Practice Test. On Friday we will go over the practice test and you'll probably get a Ch. 3 Review Guide. Test on Chapters 1 & 2 on Monday!

Advanced Chem
Get the syllabus sheet (with e-mail information) filled out and signed by you and your parents. Look over the Safety Contract, and be ready for a quick, easy quiz on lab safety. Study the packet entitled "Math Concepts Used in Chemistry," and be ready for a math assessment to help me determine your math readiness.

Honors Chem
Get the syllabus sheet (with e-mail information) filled out and signed by you and your parents. Look over the Safety Contract, and be ready for a quick, easy quiz on lab safety. Study the packet entitled "Math Concepts Used in Chemistry," and be ready for a math assessment to help me determine your math readiness.

Tuesday, August 24, 2010

School Starts Tomorrow

My schedule for the 1st semester is as follows:

1A = AP Chem
1B = planning
2AB = Adv Chem
3AB = planning
4AB = Hon Chem

I'm looking forward to meeting you. I hope you're prepared to work hard and give me your best effort.
Try to be an active learner. If you have questions, please ask! Make sure that you communicate with me so that I can help you if I can. I hope you have a great school year. 

Saturday, August 21, 2010

Welcome to Chemistry!

I'm getting things ready for the first day of school. Here's hoping that you have a fun-filled and challenging year in chemistry.