Showing posts with label Electronic Structure. Show all posts
Showing posts with label Electronic Structure. Show all posts
Electron Structure Quiz
We did our electron structure test today. It wasn't too bad, but I'll probably do bad like the rest of the test. I didn't study the ionization level section too much so that stumped me on the test. I knew most of everything else, but we'll wait until I see my grade. I liked the frequency and energy questions because that was what I was an expert on. It was physics all over again!
Element Properties
We were given a sheet with different riddles about element properties and we were to place them on the S and P sections of the periodic table. It was pretty easy and it spells out a phrase.
We then did another based on periodic trends. This was much harder. We used density for some of the graph and then ionization levels for the rest of it. For more info on periodic trends, check out this link here.
Analysis of Cr and Co
This was an interesting lab. We used a device I've never heard of before called a spectrophotometer. We started by using a tube of water to set the device to 0% transmittance. Then we place the blue tube in there, which is Cr, and the the red tube, which is Co. We measured the absorbance of light and the %T of light.
Quantum Numbers
We had a new lesson today about quantum numbers. Every element is assigned to a specific quantum number which identifies it by energy levels and electron structure. There are things called orbitals which take over certain parts of the periodic table. Check out the link under the photo under the picture.
Flame Test Lab
This lab we did was very cool. We took different metals and held them up in a flame to see what color the flame was. We then used the wavelength of that color to find frequency then used frequency to find the energy per mole of the light. Some of the metals glowed green and pink which were very cool.
This is a picture of our Bunsen Burner set up and us putting LiNO4 into the flame, causing a hot pink flame.
Electronic Structure
We started our new unit today and it so far is much easier than the last two units. It is about electronic structure. We first learned how light is electronic energy that is carried through space. All electronic energy can be characterized by waves. A couple relationships arise from this concept. The two we learned were wave speed = frequency x wavelength and energy = planck's constant x frequency. Check out the link under the picture and the link here for more info.
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