Wednesday, March 2, 2016

Helpful Links: Electronic Structure

1. Wavelength and Frequency Calculation

2. Wave Energy Calculation

3. Quantum Number Review

4. Electron Configuration

5. Periodic Trends Review

6. Electronic Structure Video

Spec. 20 Lab

Image result for spectrophotometer
http://biology.clc.uc.edu/fankhauser/labs/microbiology/growth_curve/Spectrophotometer.htm
In the Spec. 20 Lab, we used a spectrophotometer to determine each ions transmittance and incident of light. It was an extremely monotonous and time consuming lab. Every time we changed the wavelength on the machine, we had to reset it with a water test tube. It seemed almost pointless to do this lab, but we are going to use the information to analyze it on a graph. Hopefully that helps me understand the purpose behind the lab. After understanding the purpose of the lab, I'm sure I'll have a better understanding of the lab and unit.

Flame Test Lab

To complete the flame test lab, we had to put a variety of different elements over a Bunsen Burner in order to see what color they burned. By knowing what color they burned, we were able to understand the relative wavelength of energy that each element omits when it is heated up. Also, we had to calculate the amount of energy in joules that each element created by looking up the wavelength of the elements. We used the formulas that we learned in class in order to make our calculations, which will help me to study for the test.
Image result for flame test lab
https://www.pinterest.com/pin/324962929341677639/

Thursday, February 25, 2016

Third Lecture of Electronic Structure

The third lecture of this unit was easy as well. We learned about quantum numbers and how they are used in the determination of the element. It was easy to understand, as it is very simple and does not contain much hard woork. The quiz over this unit is tomorrow, and I'm feeling pretty good about it. All of the lessons individually were fairly easy, but putting them together may be tough. I need to study a lot tonight in order to ensure that I am prepared for the quiz, but I think I'll be fine.

Second Lecture of Electronic Structure

The second lecture of this unit was simple as well. We used the periodic table to classify the elements based on the number of electrons they had. Also, we had to write the electron configuration of elements by using the valence electrons, and using the classifications on the periodic table. Lastly, we used the elements that accept electrons from lower levels in order to write their configurations correctly.
Image result for electron configuration
http://electronconfiguration.info/

First Lecture of Electronic Structure

Image result for electromagnetic spectrum
https://en.wikipedia.org/wiki/Electromagnetic_spectrum
The first lecture on Electronic Structure was fairly easy. All we had to do was use formulas in order to find wavelength, frequency and energy of waves as well as group them into different types of waves. However, we had to memorize two constants that help us determine these formulas, and this was the main part that was hard, but overall, the lesson was fairly simple.

Wednesday, February 10, 2016

Links for Test Prep

Acid Base Theories- Differences and Descriptions of Arrhenius and Bronstead-Lowery definitions

Acid and Base Strength- Video of how to determine the strength of acids and bases

Ion Concentration- How to determine the concentration of hydroxide and hydronium ions in order to determine pH and pOH

Determining and Calculating pH- How to determine pH in strong and weak acids and bases

Titration Example- How to determine molarity of an unknown acid using a titration

Limiting Reagent Titration- Video of how to determine pH when there is a limiting reagent that needs to be accounted for