Biodiesel

Biodiesel is a renewable resource used as a alternative fuel. It is cleaner and healthier for our environment! Since we have been learning about this in class we all made videos for the American Lung Association! Here is our video!

Review

For some reason I find this section somewhat difficult so here are some links and pictures that are helpful for upcoming tests and quizzes:
link 1
Link 2
Link 3
Link 4
Link 5
Link 6

Resonance structures:

https://www.bing.com/images/search?q=resonance+structures&view=detailv2&&id=81E025849CBF0FDE305E8A03526962227655F3B4&selectedIndex=3&ccid=bnEqy78k&simid=608008099822436972&thid=OIP.M6e712acbbf2418f2b31de5566094fe52H0&ajaxhist=0

Molecular Geometry

https://www.bing.com/images/search?q=molecular+geometry+worksheet&view=detailv2&&id=A946226728D04819EF7B4CE0EC39274ACC64553A&selectedIndex=9&ccid=LZNZmqOv&simid=607992204159683219&thid=OIP.M2d93599aa3afce58c7cdac39bcbc904aH0&ajaxhist=0

Shapes of Molecules

This week we also learned about molecular shapes. These include Tetrahedral, Trigonal Pyramidal, Bent, Linear, Trigonal Planar. The shape determines the function of it meaning that the way the molecules arrange themselves in space depends on the number of lone pairs and bonded entities. The shape will also determine polarity.
Here are some examples of shapes:

https://www.bing.com/images/search?q=molecular+shape+chart&view=detailv2&&id=1F27BAECE49E49D75097962838F0EFD95DF59820&selectedIndex=1&ccid=THLtQqiw&simid=608045835411458256&thid=OIP.M4c72ed42a8b007fe71eb9201118abcc6H0&ajaxhist=0

Lewis Dot Structures

This week we learned about Lewis Dot Structures. It is defined as a structural representation of a given molecule where the dots show electron position and the lines show covalent bonds between atoms. The guidelines for drawing these structures are as followed:
1. Calculate the total number of valence electrons by adding all of the valence electrons for each atom in the molecule. (this is found on the periodic table)
2. Divide the total valence electrons by 2 to find the number of electron pairs in the molecule
3. Surround the central atom with 4 electron pairs. Use the remaining electron pairs to complete the octet around the other atoms. The only exception is hydrogen which only needs two
4. Electron pairs that are shared by atoms are called bonding electrons. the others are called lone pairs
5. If there are not enough electron pairs to provide each atom with an octet, move a nonbonding electron pair between two atoms that already share an electron pair.
Here are some examples:

https://www.bing.com/images/search?q=lewis+dot+structure+definition&view=detailv2&&id=2393BE262F3E574647B31DD05A497CC331C3CA05&selectedIndex=3&ccid=fKc8lRi5&simid=608023991200190055&thid=OIP.M7ca73c9518b96ad167585a918c0903a4H0&ajaxhist=0

Unit Test Reflection

The test was 50 questions. I appreciate this because even if you miss a couple it wont hurt your grade too much. I didn't do to well on the quiz but I came in for help before school and did all of the online tests as well as the worksheets. I believe I did okay on it but there are still some concepts I can improve on such as periodic trends like electron affinity. Also here are some links that were helpful:
Video 1
Video 2
Video 3
Video 4
Video 5
 Flashcards 6
   

Quantum Numbers

The rules for Quantum Numbers are as followed:
1. Principle Quantum Number: (n) this is the principle energy level
2. Angular Momentum Quantum Number: (l) this number determines the type of sublevel. The numbers are 0,1,2,3 for s,p,d,f
3. The Magnetic Quantum Number: (m1) this number runs from -1 to +1: whatever orbital you are in
4. The Spin Quantum Number: (ms) This is +1/2 for the first electron in an orbital and -1/2 for the second electron in an orbital

This concept may seem difficult but after going over it multiple times it got easier here are some examples below:
Determine the electron for the following set of quantum numbers.
- 3,2,0,-1/2: 3d^8
- 2,1,1,1/2: 2p^3
Or assign the quantum numbers for each electron below:
- 1s^1: (1,0,0,+1/2)
-1s^3: Does not exist

Periodic Table Activity

During class this week we were given a blank periodic table and a bunch of elements we had never seen before. Then for each of the elements we were given the density, reactivity series, and ionization energy. After we were given all of this information we were told to fill in the periodic table. Although challenging I really enjoyed this project. It was like one big puzzle we had to fill in!