PChem322 s22 w2

...return to Chem 322 - home

Mon, Jan 17, 2022

Announcements

1) Good Monday morning and happy Martin Luther King Jr. Day! If you have not recently seen/heard the original August 28, 1963 (I was 4 month old) MLK Jr. speech, i suggest you watch it now. Here is the full 17 min audio of the speech and here is a shorter 6 min "highlight" video. This is without a doubt a beautiful and timely speech. A particular part resonates with me as a teacher...he notes, "I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character."

2) Heads-up...in lab this week we will meet in-person in CSB 377, the computer lab. I will expect that you have your laptops up and ready to run Excel, Igor, Mathematica...or you can us the computers in 377.

Class Assignment

1) Today i would like for you to foucs your attention on Sec 1.5 and 1.6. These sections cover the "particle-wave duality" of matter and light. Although the following video is a bit old, it still does a great job of 1st describing how particles behave, then how waves behave and then explains the double slit experiment...

DOUBLE SLIT EXPERIMENT (5:13 min)

2) Complete the following worksheet that mainly focuses on Sec 1.5.

Particle-Wave Duality homework

END

Weds, Jan 19, 2022

Announcements

1) Welcome to 5G (5th Generation) cell service. This technology, which in part uses the C-Band (~4GHz) microwave technologies, may interfere with the altimeter on commercial airlines, hence thee has been a lot of concern over the launch. The cell phone companies have agreed to not use this frequency around airports for the time being...stay tuned.

2) We will meet in CSB 373 at 2 pm this week for lab. I am estimating that we will finish around 5-5:30pm.

Class Assignment

1) In lab on Thursday i will make a few additional comments and do a demonstration related to Sec 1.7: Atomic Spectra. Please read this section and be prepared to discuss.

2) I would like to point out the KEY EQUATIONS that show up on p. 33. These types of summaries are important to know about, so please note there existence.

3) Start looking over Chapter 2. This is a very important introductory chapter that requires in-person explanation and hence we will begin in earnest this chapter on Monday, Jan 24th. There are a few introductory topics in section 2.1 that can be discussed now.

- continuous vs. discrete energy levels. The concept of discrete energy levels has been drilled into your chemistry education since Gen Chem. When we think about the periodic table, we think → 1s, 2s, 2p, etc.; these are the energy levels for the electron in the hydrogen atom...shown below:

These are discrete energy levels not continuous. As noted, in lab on thursday, we will discuss this further but for now, let's focus in on only 2 discrete energy levels, level 1(L1 or subscript "1") and level 2 (L2 or subscript "2"), where L2 is higher in energy that L1.

_______ L2

________L1

Fri, Jan 21, 2022

Announcements

1)

Class Assignment

1)