Entropy Video

Here is the video related to our discussion of entropy and the direction of time: http://www.youtube.com/watch?v=-KmHFdp6cgs

Extra Help Session for Exam II

John is offering an extra help session this week for people who want to go over material for Exam II.  The help session will be Wednesday, October 17, 2-3 p.m. in Business Leadership Building room 090 .

The exam will be Thursday morning at 8 a.m. and will cover Chapters 5-8 (although I ran out of time and the exam will not cover section 8.5).

Happy Birthday Niels Bohr

Last week I introduced the Bohr model of the atom.  Neils Bohr would have been 127 years old today. In commemoration, this was the doodle art on Google.com today:

Hopefully you can recognize and understand some of the symbolism in this figure.  See if you can figure it out.  We will discuss in class.

For more info, I recommend you see this link for the Bohr model of the atom: http://en.wikipedia.org/wiki/Bohr_model

Also see this link about the hydrogen spectrum: http://en.wikipedia.org/wiki/Balmer_series

Rescheduling of Quizzes

Here is the new schedule for the next few quizzes:

• No quiz during recitation on Thursday, September 27
• Quiz 4 will be during recitation on Thursday, October 4 (It will cover Chapter 5)
• Quiz 5 will be at the beginning of lecture on Tuesday, October 9 (It will cover Chapter 6)
• Quiz 6 will be (as originally scheduled) during recitation on Thursday, October 11  (It will cover Chapter 7 through section 7.5)

Some supplemental reading to understand gasoline and diesel fuel

Here is some supplemental reading to better understand gasoline and diesel fuel.

• How Gasoline Works: http://science.howstuffworks.com/gasoline.htm
• the different hydrocarbons in crude oil: http://science.howstuffworks.com/gasoline2.htm
• How Car Engines Work: http://auto.howstuffworks.com/engine.htm
• How Diesel Engines Work: http://auto.howstuffworks.com/diesel.htm
• Diesel Fuel: http://auto.howstuffworks.com/diesel3.htm
• A more humorous explanation of the diesel engine: http://www.youtube.com/watch?v=ZSq50G27J_o&list=PL165A4CEE379FA896&index=10&feature=plpp_video

Answer Key for Quiz 2

Answer keys to Quiz 2 are now available on the Exams and Quizzes page.

Answer Keys to Previous Exam I

The first exam will be Tuesday, September 25, during lecture. It will cover Chapters 1-4. Here are some exams from previous times that I have taught this course that you can use in your preparation for the first exam. Do be aware that the material covered was not always exactly the same. Hopefully this will be of use to you, but DO NOT use them as your ONLY source for studying the material.
Fall 08
Spring 09
Fall 09
Spring10
Fall 10
Spring11
Fall11
Spring12

Office Hours for TA

John Pearson, the TA for Chemistry 1415, has now announced his office hours.  They are Monday, 4:30-5:30 pm and Tuesday 11 am-12noon in Chemistry Room 115.  You can also contact John at JohnPearson@my.unt.edu

Answer Keys for Quiz

The answer keys for Quiz 1 are now available on the Exams page of the course website:  http://courses.unt.edu/rthomas/Chem1415/exams.htm

Also, don't forget to check out the info on the main page of the website about the New London School methane explosion I mentioned in class.

Have a great weekend.

Dr. T

TA for the Course

The TA for this course will be John Pearson.  His e-mail address is JohnPearson@my.unt.edu   I will post his office location and office hours when they are available.

Dr. T

Welcome to the Fall 2012 Version of Chem 1415

Welcome to Dr. T's Chem Blog.  This is here primarily for my undergraduate course this semester, Chemistry 1415, General Chemistry for Engineering Majors.  I will post a variety of notices here throughout the semester, so check back often or subscribe.

Here are a few things to get us started:

1. I was finally able to spend some time this weekend updating the Chemistry 1415 course website.  It is now up and operational:  http://courses.unt.edu/rthomas/Chem1415/1415.htm  Feel free to check it out.
2. The class lecture will be in Chemistry Room 109.  NOTE:  This was changed several weeks ago to accommodate the large enrollment for this class.  Also, another recitation section was added.  See the course website for details of time and place.
3. The teaching assistant for this class will be Chauncey Garrett, but I do not yet have the time and location for his office hours. I may have that information by the time of the first class on Thursday, August 30.  The TA has been changed.  Please see next blog entry.

I will post more information as it becomes available.  I look forward to seeing everyone in class on Thursday morning.

Dr. T