Day 152

Hi class,

Don't forget to comment below by 8 am tomorrow.

As an optional assignment, you may submit a summary of the lecture on polymers by next Wednesday. The word limit is 500.

On further reflection, the error of the volumetric flask should be used to determine the concentration of the sodium hydroxide solution. The volumetric flask indicates a standard deviation of ± 0.40 mL. In an actual chemistry laboratory class, you would be required to carry that standard deviation throughout your calculation. I'm not going to make you do that. Instead, let's round that error and say the smallest increment on the volumetric flask is 0.1 mL. Therefore, we added 10.00 mL (graduated cylinder) of 1.0 M sodium hydroxide (from stock bottle) to create a 500.00 mL solutions. (1.0 M)(50.00 mL) = M2(500.00 mL); M2 = 0.10 M NaOH. If you've already done your calculations and used a different value for molarity, it shouldn't take much time to redo your calculations. Just go back to your handwritten equations and take everything out to one more digit.

In an actual chemistry lab class, you are required to write in pen during lab, and you cannot rewrite your data onto a new sheet. For this class, you may rewrite your data onto a clean sheet. Here is a link to the Titration Lab Packet. You do not need to attach your calculations on a separate sheet. The sample calculations in the report are sufficient.

I wish I had time to give a tutorial on Excel since this program is used frequently in chemistry. I recommend using Excel whenever possible. If one of your measurements is incorrect, you can simply replace that number rather than redoing every calculation.

I require at least two citations on this lab report. I forgot to mention that you can also cite further experimentation in your conclusion section. Here is a link to the ACS Citations. Most of the articles on Google Scholar are inaccessible to the general public, so you may use other sources (not Wikipedia). I found several sources that describe how phenolphthalein works, so you shouldn't have any issues finding these same sources.

Email me if you have any questions.

Day 151

Hi class,

Don't forget to comment below by class tomorrow.

The lab report can now be submitted at the latest by Sunday at 5 pm, but I would prefer a hard-copy by Friday.

Day 150

Hi class,

Don't forget to comment below by 8 am tomorrow.

You should fill-out your data sheet and answer all the questions tonight. You should also type-up your results section. If you're really ambitious, you can write your entire report.

There will be a guest speaker tomorrow and a corresponding assignment.

Day 149

Hi class,

Don't forget to comment by 8 am tomorrow.


I performed the lab successfully today with a few of the Chem I students, so you will be redoing the lab during class tomorrow. The molarity of the sodium hydroxide remains at 0.1 M.

I will return your drafts with feedback tomorrow. Remember that the entire lab report will be due at the beginning of class on Friday.

There will be a guest speaker on Wednesday and a corresponding assignment that will be due the day of your final (the next Wednesday).

Day 147

Hi class,

Don't forget to comment below by 8 am tomorrow.

We will perform the acid-base titration lab on Monday. You can send me your introduction and material and methods sections for feedback. I won't accept your drafts after class on Monday. Your prelab questions, which I will hand-out tomorrow, will also be due on Monday. Below, you will find links to the Chapter 4 reading and one of my old lab reports.

Chapter 4 (especially sections 4.3, 4.5, and 4.6)
Lab Title Page, Lab Report, Lab Appendix

Day 146

Hi class,

I'm sorry for posting so late once again. You can comment on this post anytime before class tomorrow. Your grades should be updated on Edline.

Day 145

Hi class,

Don't forget to comment below by 8 am tomorrow.

The quiz on chapter 11 will be administered during class tomorrow.

Day 144

Hi class,

Don't forget to comment below by 8 am tomorrow.

I'm sorry for posting so late. The quiz on chapter 11 will be administered during class tomorrow. Make sure you not only know what the concepts are but also what affects them and why. Rework the example problems from lecture and the homework problems. This is the last quiz of the year, so make it count.

Day 143

Hi class,

Don't forget to comment below by 8 am on Monday.

The quiz on chapter 11 has been moved to Tuesday. Here are the Chapter 11 Solutions (Odd). I'll send each of you a recording explaining the last six homework problems. If you have any questions about the quiz, you can ask me at the end of class on Monday.

Day 140

Hi class,

Don't forget to comment below by 8 am on Friday.

We will finish going over the homework problems on Friday, and your quiz on chapter 11 will be administered on Monday.

Please check the blog tomorrow for your assignment that will be due on Tuesday.

Day 137

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework for chapter 11 is due on Thursday, and the homework problems are 9, 11, 15, 17, 19, 21, 23, 25, 33, 34, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 54, 55, 57, 58, 59, and 61. If we do not have class, drop the homework on my desk before lunch.

Day 136

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework for chapter 11 will be due on Thursday. The homework problems to this point are 9, 11, 15, 17, 19, 21, 23, 25, 33, 34, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 54, and 55.

Day 134

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework for chapter 11 will be due on Tuesday.  The homework problems so far are 9, 11, 15, 17, 19, 21, 23, 25, 33, 34, 35, and 37.

Day 133

Hi class,

Don't forget to comment below by 8 am tomorrow.

Read sections 3 and 4 of chapter 11 tonight.

Day 132

Hi class,

Don't forget to comment below by 8 am tomorrow.

Read sections 1 and 2 of chapter 11 for class tomorrow.

Day 131

Hi class,

Don't forget to comment below by 8 am tomorrow.

Bring your chapter 18 notes and reading to class tomorrow.

Day 130

Hi class,

Don't forget to comment below by 8 am tomorrow.

There are no new assignments for tonight. Make sure that you bring your chapter 18 reading and notes to class tomorrow.

Day 129

Hi class,

Don't forget to comment below by 8 am tomorrow.

Your assignment this weekend is to email me a key to your homework problems by 10 pm on Sunday.

Day 128

Hi class,

Don't forget to comment below by 8 am tomorrow.

Ben and Shaji will give their presentation on sections 3 and 4 of chapter 18. I would recommend reading these sections before class tomorrow.

In class today, Shaji asked why the ozone hole formed over Antarctica. Essentially, atmospheric winds blow the CFCs around the globe, but the atmosphere above Antarctica hosts ideal conditions for the breakdown of CFCs, which leads to the breakdown of ozone. For a more detailed answer, please click on the following link: https://www.nsf.gov/about/history/nsf0050/arctic/ozone.htm

I mentioned in class that if the Montreal Protocol had not been enacted, the ozone layer would have completely deleted by 2065. Here is a cool video that models what will happen vs. what would have happened: https://www.youtube.com/watch?v=5MeKqJrMrQI. The left planet shows what will happen, whereas the right planet shows what would have happened if the Montreal Protocol had not been enacted. The darker blue color represents areas of complete ozone depletion.

Day 127

Hi class,

Don't forget to comment below by 8 am tomorrow.

Mariah and Symphony will present section 2 during class tomorrow. I recommend reading section 2 of chapter 18 before class.

Day 126

Hi class,

Don't forget to comment below by 8 am tomorrow.

Send me your final presentation and your ten homework problems by 10 pm tonight. I recommend reading section 1 of chapter 18 for class tomorrow. Cole and Haley will present section 1. Everyone else needs to be prepared to take notes and ask questions.

Day 125

Hi class,

Don't forget to comment below by 8 am tomorrow.

I will send each of you feedback on your presentations as soon as possible. You may work on correcting your presentations during class tomorrow. The final version of your presentation is due tomorrow at 10 pm.

Day 124

Hi class,

Don't forget to comment below by 8 am on Monday.

The quiz on sections 10.7 through 10.9 will be administered during class on Monday. In preparation for the quiz, review the lecture notes and the homework problems. In particular, you need to understand the kinetic-molecular theory and its application to gas laws, molecular effusion and diffusion, and the deviation of real gases from ideal behavior.

The presentations on chapter 18 are due by 10 pm on Monday. There are many ways you can get your presentation to me. You can use email, dropbox, or Google Drive. You can also hand me your presentation on a USB drive during school on Monday. The sooner you send me your presentation, the sooner I can give you feedback.

The point of this project is to determine whether you can interpret a college-level text and teach the information to your peers. Therefore, you should present your information as a lecture. Below, I have provided the grading rubric and a few notes that we discussed in class on Friday.

Grading Rubric
Time: 5 pts
Delivery: 15 pts
Visuals: 15 pts
Content: 45 pts
Q&A: 10 pts
HW Qs: 10 pts


Notes
1) Do not read straight from your Powerpoint or Prezi, etc. Use your slides as an outline. You may bring note cards if necessary.
2) You do not need to cite images, but you do need to cite information that is not in the text. You can either create citation slides at the end of your presentation, or you can hand me a works cited page. You may use MLA format for your citations. On the citation slides or page, indicate that all images were reproduced without permission.

Email me if you have any questions about the quiz or presentation. The presentation schedule is outlined below.

Monday: Presentations due by 10 pm
Tuesday: Corrected presentations due by 10 pm
Wednesday: Cole DeWitt and Haley Morris (Section 1)
Thursday: Mariah Rogers and Symphony Philips (Section 2)
Friday: Ben Zollinger and Shaji Ul-Islam (Sections 3 and 4)

Day 123

Hi class,

Don't forget to comment below by 8 am tomorrow.

Check your homework answers against the key: Chapter10Solutions(Odd). You may work on your projects during class tomorrow, so you have permission to bring your laptops to class. If you need internet access, I can grab a few laptops out of the cart.

As a reminder, the quiz on sections 10.7 through 10.9 will be administered during class on Monday.

Day 122

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework on sections 10.7 through 10.9 is due tomorrow and consists of the following problems: 77, 81, 83, 85, 89, 93, 95, and 97. We will go over the homework problems during class tomorrow. The quiz on these three sections will be next Monday. Therefore, you may work on your projects during class on Friday. You have permission to bring your laptops to class on Friday. I can also retrieve a few laptops from the cart if you need internet access.

Day 121

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework will be due on Thursday instead of tomorrow. The homework problems so far are 77, 81, 83, 85, 89, and 93.

We will discuss van der Waals equation at the beginning of class tomorrow. For the rest of the class period, you will be free to work on your projects with your partner, so you may bring your laptop to class tomorrow.

Some of the material today was hard to understand in one sitting, so I have posted a video below that does a decent job of explaining why gases deviate from ideal behavior at high pressure and low temperature.

Day 120

Hi class,

Don't forget to comment below by 8 am tomorrow.

The project will be due on Monday at 5pm instead of Sunday at 5 pm so that you have all of Sunday to work on the project as well. This means the presentation schedule has been shifted back one day. Your presentation should take 35 minutes plus or minus 3 minutes instead of 40 minutes. There will now be a 10-minute Q&A after each presentation. Every student in the audience must ask at least one question, and the presenters must be prepared to answer these questions.

The link to the pdf version of Chapter 18 on the last blog post is working now.

If you were not in class today, we went over section 10.7 and the first topic of section 10.8. The homework on sections 10.7-10.9 will be due on Wednesday. The homework problems so far are 77, 81, and 83.

Day 119

Hi class,

Don't forget to comment below by 8 am on Monday.

I would recommend getting started on your project this weekend. If you were not in class the last few days, here is the pdf version of Chapter 18. You can grab a hard-copy on Monday. Below, I have outlined your approach for this project.

1. Meet with partner (see last blog post) and create game-plan.
2. Read your assigned section of Chapter 18.
3. Determine what information will be covered in your lecture from the Chapter 18 reading.
4. Research outside information to supplement the information in the reading. (Don't forget to cite sources. Wikipedia can be used as a tool but not as a source.)
5. Your presentation can include images, videos, etc.
6. Compile a list of ten homework questions. (You can use some of the questions from the textbook or use the textbook questions to form your own questions.)
7. Send me your presentations and your homework questions by 5 pm on Sunday, March 30.

Day 118

Hi class,

Don't forget to comment below by 8 am tomorrow.

Today, I informed the two students in class about a future project. I have broken-down the class into the following pairs: Mariah and Symphony, Cole and Haley, and Ben and Shaji. Each pair must read their assigned section of chapter 18, create a 40-minute lecture on that section, present the lecture in class, and compile a list of ten homework problems to accompany their lecture.  Cole and Haley have section 1. Mariah and Symphony have section two. Ben and Shaji have sections 3 and 4. You must email me your presentation and list of homework problems with solutions by 5 pm on March 30th. The presentations will take place the week of March 31st. Cole and Haley will present on Monday. Mariah and Symphony will present on Tuesday. Ben and Shaji will present on Wednesday.

Day 117

Hi class,

Don't forget to comment below by 8 am tomorrow.

If your grade on your report card does not match your grade on Edline, see Mrs. Ransom.

Day 116

Hi class,

Your grades for Quarter 3 have been posted on Edline. Five points were added to your Quarter 3 exam grade if you turned-in the appropriate quizzes today. Four students earned a grade of 100+ for Quarter 3. Any points scored over 100 will be added as bonus points next quarter.

Day 115

Hi class,

Don't forget to comment below by 8 am tomorrow.

The exam on chapters 3, 4, 5 and most of 10 will be administered during class tomorrow. You may fill-out the provided index card as a cheat sheet for the exam. Do not memorize how to work specific problems. Instead, understand how to get from what you are given to your solution. In sum, use dimensional analysis. If you have any questions, you can email me anytime before midnight.

The keys to the quizzes are available through Google Drive. Each of you should have received an email with a link to two zip files that contain the keys. (Ben, I wasn't able to send you the link. What is your email address?)

Day 114

Hi class,

Comment below by 8 am on Monday.

As you know, the nine weeks exam has been moved to this Tuesday. The exam will still contribute to your Quarter 3 grades. Since the exam is worth 100 points, this test can really help or hurt your grade. You are allowed to bring a cheat sheet, which I will discuss in further detail on Monday. You can also ask me any questions at anytime via email or in class on Monday.

Day 111

Hi class,

Blog comments on any posts this week are due by 8 am this Saturday.

Hopefully, you listened to the recording I left for you during class. To reiterate, this week is a review week. The nine weeks exam on chapters 3, 4, 5 and most of 10 will be administered during class on Monday, March 17. You can use the free class time this week to reread lecture notes and rework homework problems and quizzes. Links to the solutions manual and blank copies of the quizzes are available below. If you have any questions, email me as soon as possible. I will compose a video of the solutions to your questions and will share the video on Google Drive with you.

Chapter3Solutions(Odd)
Chapter4Solutions(Odd)
Chapter5Solutions(Odd)
Chapter10Solutions(Odd)

Chapter3Quiz
Chapter4Quiz
Chapter5Quiz
Chapter10Quiz

Day 110

Hi class,

Don't forget to comment below by 8 am tomorrow.

The test on chapter 10 will be administered during class tomorrow. To prepare for the test, read the lecture notes and rework the homework problems. Here are the Chapter 10 Solutions (Odd). As a reminder, the two problems I covered today will not be on the test tomorrow, but they could be on your nine weeks exam after spring break.

If you have any questions, you can email me anytime before 12 am. If you are concerned that I cannot answer your questions through email, ask me anyway. I will figure out a way to answer your questions electronically.

Day 109

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework for chapter 10 is due tomorrow, and the homework problems are 21, 25, 27, 33, 35, 39, 41, 43, 49, 51, 53, 55, 57, 59, and 65. The test on chapter 10 will be administered during class on Thursday.

Day 108

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework problems so far are 21, 25, 27, 33, 35, 39, 41, and 43.

Day 107

Hi class,

Don't forget to comment below by 8 am tomorrow.

If you missed class today, please read the first two sections of chapter 10 and work sample exercise 10.1.

Day 106

Hi class,

Don't forget to comment below by 8 am tomorrow.

Read the introduction as well as the first two sections of chapter 10 for class tomorrow.

The homework for chapter 10 will be due next Tuesday. The test on chapter 10 will be administered during class next Thursday.

Day 105

Hi class,

Don't forget to comment below by 8 am on Tuesday.

The test on chapter 5 will be administered during class on Tuesday. If you have any questions, you can email me anytime before 10 pm on Sunday. I may or may not be available to answer questions on Monday.

Day 104

Hi class,

Don't forget to comment below by 8 am tomorrow.

The test has been pushed to Tuesday. We will finish going over the homework problems tomorrow.

Day 103

Hi class,

Don't forget to comment below by 8 am tomorrow.

We will finish checking the homework for chapter 5 during class tomorrow. The test on chapter 5 will be administered during class on Wednesday. Here are the Chapter 5 Solutions (Odd).

Day 102

Hi class,

Don't forget to comment below by 8 am tomorrow.

Please make sure you understand Sample Exercises 5.11 and 5.12. Then, rework problems 69-79 (odd) for class on Monday. Here is Appendix C. You can email me anytime before 10 pm on Sunday if you have questions.

We will finish going over the homework problems on Monday and Tuesday. The test on Chapter 5 will be administered during class on Wednesday.

Day 101

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework for chapter 5 is due at the beginning of class tomorrow, and the homework problems for chapter 9 are 15, 27, 29, 37, 39, 41, 43, 45, 47, 51, 53, 55, 57, 59, 63, 65, 69, 71, 73, 75, 77, and 79. If you have any questions, you can email me anytime before 10 pm.

Day 100

Hi class,

Don't forget to comment below by 8 am tomorrow.

The homework for chapter 5 will be due on Friday. The homework problems so far are 15, 27, 29, 37, 39, 41, 43, 45, 47, 51, 53, 55, 57, and 59.

Day 99

Hi class,

Don't forget to comment below by 8 am tomorrow. I forgot to publish the post yesterday, so please comment on the post labelled "Day 98" as well.

At this point, we have covered the first four sections of chapter 5. The homework will be due on Friday, and the homework problems so far are 15, 27, 29, 37, 39, 41, 43, 45, and 47.

Day 98

Hi class,

Don't forget to comment below by 8 am tomorrow.

There are no new assignments for tonight.

Day 97

Hi class,

Don't forget to comment by 8 am tomorrow.

We will start chapter 5 on Monday.

Day 96

Hi class,

Don't forget to comment below by 8 am tomorrow.

The quiz on chapter 4 will be administered during class tomorrow. If you have any questions, you can email me anytime before 10 pm. Good luck!

Day 95

Hi class,

Don't forget to leave a comment below by 8 am tomorrow.

Check your homework problems tonight. Here are the Chapter 4 Solutions (Odd). Bring any questions about chapter 4 to class on Thursday. The quiz on chapter 4 will be administered during class on Friday.

Day 94

Hi class,

Don't forget to leave a comment below by 8 am tomorrow.

The homework for chapter 4 is due at the beginning of class tomorrow. The homework problems are 15, 17, 19, 21, 23, 25, 35, 37, 39, 41, 49, 51, 53, 55, 57, 61, 63, 67, 69, 73, 79, 81, 83, 85, and 87.

The quiz on chapter 4 will be administered during class on Thursday.

Day 93

Hi class,

Don't forget to leave a comment below before 8 am tomorrow.

We will finish talking about titrations on Monday. The homework for chapter 4 is now due on Tuesday, and the homework problems so far are 15, 17, 19, 21, 23, 25, 35, 37, 39, 41, 49, 51, 53, 55, 57, 61, 63, 67, 69, and 73.

Day 92

Hi class,

Don't forget to comment below by 8 am tomorrow.

Read sections five and six of chapter 4 for class tomorrow. The homework for chapter 4 will be due Monday. The homework problems so far are 15, 17, 19, 21, 23, 25, 35, 37, 39, 41, 49, 51, 53, 55, and 57.

Day 91

Hi class,

Don't forget to leave a comment below by 8 am tomorrow.

Make sure you have read section 4 of chapter 4 for class tomorrow. The homework for chapter 4 will now be due on Monday. The homework problems so far are 15, 17, 19, 21, 23, 25, 35, 37, 39, and 41.

Day 90

Hi class,

Don't forget to leave a comment below by 8 am tomorrow.

Your grades to date have been posted on Edline. Make sure that there are no discrepancies.

Read sections 3 and 4 of chapter 4 for class tomorrow. The homework for chapter 4 is due Friday, and the homework problems assigned so far are 15, 17, 19, 21, 23, and 25.

Day 89

Hi class,

Don't forget to comment by 8 am on Tuesday.

We will begin chapter 4 this week.

Day 88

Hi class,

Don't forget to comment below by 8 am tomorrow.

Make sure you have read the first two sections of chapter 4 for class tomorrow.

Day 87

Hi class,

Don't forget to leave a comment below before 8 am tomorrow.

I decided to stay home today so that I didn't cause anyone else to get sick. Hopefully, all of you did well on the chapter 3 quiz. Please read chapter 4 from the beginning through section two before class tomorrow.

Day 86

Hi class,

Don't forget to comment below before 8 am tomorrow.

The quiz on chapter 3 will be administered during class tomorrow. The quiz is based on the homework problems, and you must finish the quiz during the class period. Unfortunately, I was not able to work every problem that you put on the board today. If you still have questions, you can email me.

Listed below are the main concepts from chapter 3

• balancing equations
• recognizing combination vs decomposition vs combustion reactions
• calculating percent composition (by mass)
• using the concepts of the mole and molar mass in calculations
• determining empirical and molecular formulas
• calculating theoretical yield and percent yield

Day 85

Hi class,

Don't forget to leave a comment below.

Your assignment for tonight is to check the rest of the homework problems for chapter 3. During class tomorrow, you can ask about any problems that you do not understand. You can also ask about any other aspect of chapter 3 in preparation for the quiz on Wednesday. Here are the Chapter 3 Solutions.

Day 84

Hi class,

Don't forget to leave a comment below by 8 am on Monday. If you notice that somebody has not left a comment at any point during the semester, be a good friend and remind them.

The homework for chapter 3 is due Monday. Tuesday will be a review day. The quiz on chapter 3 will be administered during class on Wednesday. The homework problems for chapter 3 are 11, 13, 17, 19, 21, 23, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 61, 63, 65, 67, 69, 75, 77, 79, 81, and 83.

Day 83

Hi class,

Don't forget to comment below.

Make sure you have read section 6 of chapter 3 for tomorrow. Also, read section 7 of chapter 3 for tomorrow.

If you missed class today, we went over section 5 of chapter 3. Please make sure you have read section 5 and can work the sample exercises.

As a reminder, the homework for chapter 3 is due on Monday. The homework problems to this point are 11, 13, 17, 19, 21, 23, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, and 53.

Day 82

Hi class,

Don't forget to comment on this post for one participation point.

Please read sections five and six for class tomorrow. If you will not be in class tomorrow, read carefully and work the sample exercises. If you don't understand any of the information in these sections, you can come see me during seventh period.

The homework for chapter 3 will be due Monday. Tuesday will be a review day, and the chapter 3 quiz will be administered during class on Wednesday. The homework problems to this point are 11, 13, 17, 19, 21, 23, 33, 35, 37, 39, and 41. The chapter 3 problem set will include many problems, so I recommend working on it everyday.

Day 81

Hi class,

Turn in your tests today from last semester for five bonus points.

As a reminder, email me before 10 pm tonight from your gmail address. After receiving my reply, comment on the blog with the following sentence, "[Insert Name] checked the blog." You will receive one point for the email and one point for the blog comment. From today onward, you must comment on the blog everyday for one participation point. If you are late for class, you will lose half of your participation point.

Go back and read the introduction and the first two sections of chapter 3, which we went over today. Read sections 3 and 4 of chapter 3 for class tomorrow. The homework problems for chapter 3 to this point are 11, 13, 17, and 19. The homework for chapter 3 will be due Monday (1/13/14).