Chemistry 40S

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Feb. 2

Started presentations for our inquiry projects.

Feb. 1

Continued researching for our inquiry projects. We'll start presentations tomorrow.

Jan. 31

Started researching for our inquiry projects.

Jan. 28

Had part 2 of our exam today.

Jan. 27

School was closed today, so our exam part 2 will be moved to Friday. Keep in mind this means you'll have one less day to work on your inquiry projects, so you may want to consider starting that today or on the weekend.

Jan. 26

Had Part 1 of our exam on Atomic Structure, Kinetics, and Aqueous Reactions. Tomorrow will be Part 2 on Equilibrium, Acids and Bases, and Electrochemistry.

Jan. 25

Reviewed the Acids and Bases unit. Exam part 1 is tomorrow, on Atomic Structure, Kinetics and Aqueous Reactions.

Jan. 24

Reviewed the Electrochemistry unit. For those of you that didn't get a copy of the review sheet yet, pick one up from me tomorrow. Don't forget that our exam starts on Wednesday.

Jan. 21

Reviewed the Equilibrium unit. Good luck to those of you writing your pre-cal exam on Monday.

Jan. 20

Reviewed the Aqueous Reactions unit.

Jan. 19

Revewed the Atomic Structure and Kinetics units.

Jan. 18

Had our Electrochemistry unit test.

Jan. 17

Reviewed the Electrochemistry unit. The test is tomorrow. The worksheet and the answers are here:
08 Electrochem Review Worksheet.doc

Jan. 14

Talked about electrolytic cells. We'll review the Electrochemistry unit on Monday.

Jan. 13

Built some voltaic cells. The lab will be due Monday.

Jan. 12

Talked about cell potential. Here are the answers for the worksheet:
05 Cell Potential Worksheet Answers.pdf

Jan. 11

Talked about our course-end inquiry project.

Jan. 10

No class because of the ELA exam.

Jan. 7

Talked about voltaic cells and how to determine whether an electrode will be the cathode or the anode. Work on the questions for next week, and good luck on your ELA exam on Monday!

Jan. 6

Got standard reduction potential tables, and worked on a simulation in the computer lab.

Dec. 21

Had our field trip to the U of M chemistry department.

Dec. 20

Talked about voltaic cells, then made our own voltaic cell out of a lemon, a penny and a piece of zinc. Meet in my room tomorrow morning at 8:30 AM so that we can be on the bus and driving to the U of M for shortly after 9.

Dec. 17

Finished up our lab and played some chemistry jeopardy. Don't forget to bring your Field Trip permission form in for Monday if you haven't done this already.

Dec. 16

Did a lab on the reactivity of metals. We'll talk about this more tomorrow.

Dec. 15

Finished up the Half-Reaction method. Work on the practice questions for tomorrow if you're not quite done.

Dec. 14

Started into the Electrochemistry by talking about the Half Reaction method of balancing chemical reactions. We'll finish off talking about this tomorrow.

Dec. 13

Had our Acids and Bases test.

Dec. 10

Did some more Acids and Bases review. Don't forget that the test is on Monday.

Dec. 9

Had our Acids and Bases review.

Dec. 8

Talked about hydrolysis and how mixing salts with water can produce an acidic or basic solution. We also decided that our Acids and Bases unit test will be on Monday.

Dec. 7

Did a lab on finding what percent of an aspirin tablet was made of ASA. Finish this for Friday if you're not done yet.

Also, the answers for the percent dissociation worksheet are here:
06 Percent Dissociation Worksheet Answers.pdf

Dec. 6

Talked about percent dissociation and how to solve problems using this concept.

Dec. 3

Talked about the acid dissociation constant. Gave out a hand-in assignment, due Wednesday:
05 Ka and pH Worksheet.doc

Dec. 2

Talked about acid strength tables. Then we had a more relaxing second half of class.

Dec. 1

Talked about the pH and pOH scale. Finish off the practice questions for tomorrow.

Nov. 30

Had our Equilibrium unit test.

Nov. 29

Did a lab investigating acid and base indicators.

Nov. 26

Talked about the ion product constant and how we can use it to find hydroxide and hydronium concentrations for water. Here's the practice questions that go along with it:

02 Ion Product Constant Worksheet.doc

Nov. 25

Started into the new unit on Acids and Bases. Talked about the historical development of how we think about acids and bases, and where we're at today with regards to conjugate pairs. Worked on some practice questions about conjugate pairs:

01 Conjugate Pairs Worksheet.doc

Nov. 24

Reviewed the Equilibrium unit. Make sure you work on the review assignment so that you can ask questions before the test (Tuesday next week).

Nov. 23

Had a work period to go over some questions we had about the hand-in assignment. If you aren't done it yet, have it done for tomorrow.

Nov. 22

Today we did a lab where we calculated the Ksp of lead iodide.

Nov. 19

We worked through a special example of using the solubility product, and then had a presentation from Ten Thousand Villages.

Nov. 18

Talked about the common ion effect and how it changes the solubility of different substances. Gave out a hand-in assignment, due on Tuesday.

Nov. 17

Talked about the solubility product and solved related problems.

Nov. 16

Did a lab based on Le Chatelier's principle.

Nov. 15

Had to move class to the library because of the huge mess on the floor, so we started talking about the solubility product. We'll continue talking about this later.

Nov. 10

Worked on some more Le Chatelier problems and on the hand-in assignment due today. If you're all done this, you'll have no homework for the long weekend! Here are the answers for the Le Chatelier questions:

07 Le Chatelier Practice Questions 2.doc

Nov. 9

Talked about Le Chatelier's principle, and how it relates to changes in temperature and the addition of catalysts. Instead of giving out a practice assignment, we took some time to work on outstanding assignments/labs.

Nov. 8

Talked about Le Chatelier's principle, and how it relates to changes in concentration and volume. If you're not done yet, finish it off for tomorrow. Answers are here:

06 Le Chatelier Practice Questions.doc

Nov. 5

Talked about the BIRPEC method of solving for the equilibrium constant. Not really anything new, just a fancy way of putting stoicheometry into a table. Gave out a hand-in assignment, due Tuesday:

04 Equilibrium Constant Handin.doc

Nov. 4

Talked about the ICE method for finding the equilibrium concentrations of substances. If you're not done yet, finish off the worksheet for tomorrow. Here it is:

03 ICE Method Worksheet.doc

Nov. 3

Had our Aqueous Reactions unit test.

Nov. 2

Today we talked about equilibrium expressions, and the equilibrium constant, Kc. Finish off the questions from the worksheet for tomorrow.

Nov. 1

Today we started into the Equilibrium unit. If you're not quite done, finish off the practice questions for tomorrow.

Oct. 29

Today we did some more review of the aqueous reactions unit. Don't forget the unit test on Wednesday next week.

Oct. 28

Reviewed the Aqueous Reactions unit. The answer key for the review assignment is here:
11 Review Worksheet.doc

Oct. 27

Today we learned about redox reactions that occur in acidic or basic solutions. We started working on a practice assignment for these types of questions, and also worked on the hand-in assignment that is due Friday.

Oct. 26

Today we learned how to balance redox reactions using the Oxidation Number method. The hand-in assignment from today will be due on Friday.

Oct. 25

Took some more time to work through some redox reaction questions. If you're not done the worksheet yet, finish it off for tomorrow.

Oct. 21

Talked some more about redox reactions, and figuring out which substance is the oxidizing/reducing agent. Answers for the worksheet are here:

08 Identifying Redox Reactions Answers.doc

Work through this worksheet for Monday, as we will be moving on to other redox-related things.

Oct. 20

Talked about oxidation numbers and how to find oxidation numbers for compounds. The answers for the assignment are here:

07 Finding Oxidation Numbers Worksheet.doc

If you're not done yet, polish the assignment off for tomorrow.

Oct. 19

Started talking about redox reactions. If you aren't done the oxidizing/reducing agent worksheet, finish it for tommorow.

Oct. 18

Did a titration lab. Had fun with bright pink chemicals.

Oct. 15

Did some more practice questions on neutralization reactions: neutralizationTitrationWkst.pdf. Then we watched an episode of Bill Nye.

Oct. 14

No class today because everyone was gone!

Oct. 13

Talked about neutralization reactions and what happens when a strong acid and a strong base react. The hand-in assignment for today will be due on Friday (or on Monday if you're away on Friday).

Oct. 12

Did a lab based on the formation of a precipitate. This will be due Friday.

Oct. 6

Started talking about aqueous solutions and why ionic compounds dissolve in water. Questions for tomorrow: pg. 344 #30 - 35.

Oct. 5

Had our Reaction Rates unit test.

Oct. 4

Got a little sidetracked by questions from the review, but started into some Aqueous Reactions. Talked about molarity and how to do calculations to find the amount of a substance that is needed to make a solution.

Oct. 1

More time to review today. Don't forget about the test that's happening on Tuesday next week.

Sept. 30

Reviewed the reaction rate unit. Remember that the unit test will be on Tuesday next week. The answers for the worksheet are here:
09 Review Assignment Answers.doc

Sept. 29

Finished up rate law, did some example questions for doing calculations with a rate law. If you haven't finished the questions on the two worksheets, finish those off for tomorrow.

Sept. 28

Talked about the rate law and how we can use it to figure out the rate of reaction of two reactants. Try up to #3 on the worksheet, and we'll continue talking about rate law tomorrow.

Sept. 27

Talked about filling in tables of concentrations if we know some (but not all) of the information. We also talked about lab reports and what needs to go in it. The lab is due for Monday, so work on that sometime this week.

Sept. 24

Did a reaction rate lab, examining the reaction of hydrochloric acid and calcium carbonate. We'll talk about lab reports and how to do calculations with your data on Monday, so no homework for the weekend.

Sept. 23

Had a work period where we asked questions about the hand-in assignment and worked on other assignments that we had going on. Hand-in assignment due date is moves to Friday.

Sept. 22

Talked about elementary processes and how to find the net equation using this concept. The worksheet from today will be for homework check on Friday, and don't forget that the hand-in assignment is due Thursday.

Sept. 21

Talked about energy in reactions (enthalpy) and what activation energy is. Handed out a hand-in assignment, due on Thursday.

Sept. 20

Today we talked about the graphical approach to calculating reaction rates. If you haven't finished the example we were working on in class, finish it off for tomorrow.

Sept. 17

Talked about rate expressions and how they can be used to find the rate of change of concentration of any reactant or product in a chemical reaction. Finish off the Chemical Kinetics Worksheet for Monday. The answer key is here:

Sept. 16

Today we had an Atomic Structure quiz, then we reviewed some stoicheometry.

Sept. 15

Started the Kinetics unit, talked about reaction rates and did a little bit of review on stoicheometry. Don't forget about the Atomic Structure quiz tomorrow.

Sept. 14

Talked about trends in the periodic table, and how to predict the bond type between two atoms if you know the electronegativity values. Homework is the Electronegativities worksheet, and if you'd like extra practice, pg. 178 # 16-23.

Sept. 13

Talked about electron configurations, discovered that most people covered this in Chem 30S. Homework for Tuesday: pg. 149, questions 26, 30-34, 39.

Sept. 10

Talked about the electromagnetic spectrum and how we can classify them. Talked about spectral emissions and how each substance has a unique set of emission lines. Homework for Monday: pg. 146 in the textbook, questions 16-18 and 21.

Sept. 9

Handed out textbooks, went over lab safety and handed out lab safety contracts. Please have your parents sign these so that you can participate in labs!

Talked about the history of atomic theory. Homework: questions 8-10, 12-14 on page 109 in textbook.