Class Blog 12-18-13

Class Blog 12-18-13

What we did today:

1. Went over the 4 sheets that were due for homework. No key posted. Answered questions in class.

2. Handed back the scantrons that we filled out yesterday in class along with our review packets.

3. Went over/answered questions from the quiz from Friday.

Today was a shortened period, so we just went over the quiz.

Homework:

Study for our test tomorrow!!!! There will be no short answer on the test, making much more like our review packet, rather than our quiz.

12-16-13 Blog

!@-!&-!#

(12-17-13)

Today we checked in:

• Unit 6 Review Packet

The key to the packet will be posted on moodle tonight.

Notes:

Look on moodle for the full notes. This is merely a quick summary of what we went over in class today.

Periodic Trends:

Atomic Radius. The size of the atom.

Ionization Energy. The amount of energy it takes to remove one of the outermost electrons (valence electron) from an atom.

Electronegativity. How “strong” an atom is at pulling bonded electrons closer to itself.

Get a partner. Get a scantron. GO OVER YOUR ANSWERS TO THE REVIEW PACKET AND FILL IN THE SCANTRON TOGETHER.

The next scribe is................................. Melissa!

Class Blog of 12/16/13

Today we checked in:

• Coulombic Attractions
• Shells, subshells, and orbitals... Oh my!
• WK in our lab notebook with the periodic table

The keys to the handouts are on Moodle already

CORRECTION: Periodic Table Worksheet

6k) The answer is [Kr] 5S2 4D9

We picked up the periodic trends worksheets which can be found in the handouts link under Unit 6.

Class Notes:

Periodic Trends:

Atomic Radius:

-How big is an atom?

-How many energy shells are filled?

-How many protons are in the nucleus?

Ex. H             the first shell                                                             He           the first shell

      Li             the second shell                                                        O            the second shell

      Na           the third shell                                                            

As you go down in the periodic table, atoms get bigger because electrons are going into bigger and bigger shells that take more space farther away from the nucleus

As you go across in the periodic table, from left to right, atoms get smaller because there are a greater amount of protons for each electron thereby increasing the pull between them. This attraction pulls the electrons closer to the nucleus, decreasing the size of the atom.

-Atomic radius increases going down and to the left in the periodic table.

REMINDERS:

Test is THURSDAY!

The test will be 45 M/C with no short answers. 

The Unit Review Packet is due tomorrow!!!

The review session for this unit is WEDNESDAY at 7:00 A.M. 

Homework:
Finish the Periodic Trends worksheets. Due tomorrow.

Tomorrow's blogger will be Frankie 

Class Blog 12-13-13

Today Ms. Friedmann was absent as were many other due to Snowball. We took at quiz and were given a packet that was labeled the Coulombic Attraction. This packet can be found under Handouts in Unit 6. This packet, along with homework due for today will be checked on Monday.

I will be the scribe again on Monday.

Have a good weekend!

Class Blog 12/12/13

Beginning of Class:

Checked in 2 homework assignments:

o   The 3^rd sheet of Electron Configurations and Orbital Diagrams

o   Quantum Numbers WS #2

Notes:

Valence Electrons:

What do you notice about the e- configs for ions?

-They are the same as the e- configs for Noble Gases

 Valence: The number of electrons in the highest occupied energy level (n)

Example:

Na (11e-): 1s­­­²2s²2p⁶3s¹

·       Highest energy level is 3, so the valence would be 1 for all elements in group 1

The Octet Rule: A valence of 8 is the most stable. Elements lose or gain electrons to achieve a Noble Gas configuration

Abbreviated Configurations:

Ex: Bromine (Neutral).

            35e-s

            1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

            *The bold part is the Argon configuration, so…

[Ar]4s²3d¹⁰4p⁵

                How do you do this?

*Back up to the last noble gas, put it in brackets, and continue the rest of the config

 More Examples:

·       Na: [Ne]3s¹

·       Ca: [Ar]4s²

Excited State Configurations:

1s²2s²2p⁵3s¹

-        Notice that 2p is not filled 

1s²2s²2p⁶  ----> This is what the ground state would be. An electron jumped up = Excited State.

We also filled out this periodic table in class today to help us write the electron configuration of elements.

Homework:

• The fourth page of the "Electron Configurations and Orbital Diagrams" worksheet 
• The “Shells, Subshells, and Orbitals” worksheet
•   Study for the quiz tomorrow. It will cover everything we have learned so far and it is NOT a partner quiz. People who will not be at class tomorrow because of Snowball will have to make up the quiz on Monday.

Class Blog 12-11-13

We had a Late arrival today!!!

What did we do in class?

*Checked in the Homework and got one handout

           -Look in handouts for Quantum numbers wrkst #2

*Went over homework- Quantum Numbers and the first two pages of Electron Configuration and Orbital Diagrams

           -Check in the keys folder on moodle to see the answers

HW

1. The review packet is now due on Tuesday 12/17.  Our unit test will take place on Thursday, 12/19.

2. Plan for a quiz on everything in Unit 6 (so far) on FRIDAY of this week

3. The third page of Electron Configuration and Orbital Diagrams pages 

Class Blog 12/10/13

Right when we walking into class Mrs. F gave everyone a Band-aid and told us not to open it. We then all went to the back of the room and turned off the lights. On the count of three we all ripped our Band-Aids open, and if you were looking closely, you could see a small glow, or light, be given off.  It was a fun opening experiment at the beginning of class to get the day started about electrons and how they can give off light while jumping to different levels of energy in an atom. 

We then continued our notes from yesterday in our journals. They are posted in the Unit 6 Notes folder on moodle

The notes may be very confusing for you, but do not worry. Try the homework at home whether you understand it or not. This is a class were we need to get use to not getting it the first or second day. 


Classes were 40min today because of the Sports Assembly, so it was a shortened period 


Tuesday, 12/10 Homework

1) The worksheet "Electron Configurations and Orbital Diagrams" (posted in the Unit 6 Handouts folder) has 4 pages to it; do only the FIRST TWO pages for homework tonight.  I gave this out yesterday, but the handout is dated as today since I did not assign it until today.  Today's notes are posted in the Unit 6 Notes folder; they (and your text) should help you.  I will check in both tonight's homework and last night's homework (the Quantum Numbers worksheet) tomorrow in class.

2) Have you read "Bill Bryson -- The Mighty Atom" (posted in the Unit 6 Notes folder) yet?  You really should.

3) The review packet is now due on TUESDAY, 12/17, NOT TOMORROW.  Our unit test will take place on THURSDAY, 12/19.

4) Plan for a quiz on everything in Unit 6 (so far) on FRIDAY of this week (the lucky 13th).  :)

Enjoy your late arrival tomorrow!

Next Blogger is Marlye Jerva

Gemini Plamoottil 12/9/13

12/9/13- IN CLASS NOTES

• We checked in our hw worksheet. 
• We taped in 6 handouts, which all can be found on moodle in the handouts section 

We took some notes (WE ALSO ADDED A FEW NOTES TO THE NOTES THAT WE TOOK ON FRIDAY: 

•  Just some of the ADDITIONAL NOTES (Mrs. Friedman posted a cleaner version of her original notes on moodle and they are more detailed as well, so be sure to check that out).

A QUANTUM IS A SPECIFIC AMOUNT... AS IN A SPECIFIC AMOUNT OF ENERGY LIKE A STEP. SINCE THE ELECTRONS JUMP AND FALL IN SPECIFIC QUANTUM THEY RELEASE THE LINE SPECTRA THAT BOHR STUDIED.

1. Electrons like to be as low in energy as possible- the closer to the nucleus the lower the energy and this is called GROUND STATE 
2. Electrons absorbs energy (from an electric current for example) and that pushes it to a higher energy level which is called EXCITED STATE
3. Electron prefers to be at a low energy state, so it falls back down to the ground state. 
4. The electron releases the energy it absorbed as a wavelength of light. Then it falls a specific number of "energy levels", it always releases the same wavelength (energy) of light. 

Todays Notes: BOHR MODEL AND BEYOND CONTINUED..........

       To Summarize---- Electrons jump to higher energy levels when you put more energy in them (like electricity), then they release the extra energy as light when they fall back to GROUND STATE. 

"WAVELENGTH" of light released depends on how many levels the electron jumps and falls. 

~DeBroglie and Shroedinger 

• GO back to Einstein: A wave can act like a particle. What if an electron can act like a wave? 
• This one is n=3 (which is number of crests) ------>THIS WAVELENGTH WORKS!!!

• This one is n=5 (which is number of crests) ---------> THIS WAVELENGTH WORKS!! 

IF One has n= 3.5 then the wavelength does not work because the numbers can only be whole #'s. 

• These wave functions are called orbitals: Areas where you will probably find an electron. 

HEISENBERG- His contribution was "uncertainty principle" - ( You can't know an electron's position and momentum at the exact same time. ( All you can know is the orbital) 

• Orbitals: Areas of probability where you are likely to find an electron (However they have different shapes) 

This is an "S" orbital: 

It remains the same shape except the "bubble" gets bigger and bigger 

Also, electrons exist on the surface of the "bubble"

Three out of four of these are "P" orbitals

So here are just some of the different orbital we talked about in class. 

• WE MUST KNOW WHERE THE ELECTRONS ARE FOR EACH ELEMENT - there are two ways to map electrons

1. Electron Configuration 
2. Orbital diagram 

Quantum #'s allow us to "address electrons". 

N= energy level (1,2,3)

How far or close to the nucleus 

The closer to the nucleus the lower the "N" is. 

• This is the symbol that represents orbital shape/type of orbital (S,P,D,or F)     

• An m with the a subscript of the symbol above = Orbital orientation ( what direction it's going in PX,PY, PV)

When N=1 ----->zero=1S orbital---->An there is one possible type of orbital

When N=2 ----> zero=2S and 1=2P----> Zero is 2S---->-1,0,+1 (Px,Py,Pz)---> 4 possible orbitals 

We did not finish all the notes in class today, so whoever the blogger is tomorrow will finish the rest of the notes. 

Today's Hw is:

Finish the 2 webassigns by 11:59 pm today( the ones that we attempted over the weekend) 

Also 2 wksh: Quantum numbers and the continuation sheet

Also, continue to do the study guide packet because it's due on the 11th I believe. 

NOW FOR SOME JOKES!!!

This  I just thought was pretty clever!!

HAHA LOL

and it's pretty sweet, AWWW

The NEXT Blogger will be Kate M ( unless someone still hasn't blogged for second quarter then it will be them :) 

December 6th, 2013

At The Beginning of Class

Today we checked in the Lab and the notes of the two power points

Atomic Scientists - Quick Review (Quick and Dirty Review)

Notes will be posted in Unit 6 Handouts

-Dalton

- Was the first to synthesize lots of data on the atom

- Came up with ¨postulates¨ on the atom

- ¨Atomos¨

- LAWS:

- Conservation of Mass, Definite proportions, multiple proportions

- Indivisible particle (depiction of Dalton's atom)

-Thomson

- ELECTRON

- Famous for using Cathode ray tube experiments

- Negatively charged particle that he was able to pull off the atom

- ¨Plum-Pudding¨

- Chocolate chip cookie model?

- Negative particles are the chocolate chips (Electrons)

-Rutherford

- NUCLEUS

- Very small, Very Dense, AND Positively Charged in the nucleus (came to this conclusion since the alpha particles are positively charged)

- Majority of the atom is empty. The Nucleus is VERY VERY VERY small…. BUT it is covered with electrons.

- Most of the mass is located in the nucleus.

-Bohr

- Mathematician

- Planetary Model

- Electrons in ¨orbits¨ around nucleus

- Not entirely accurate

-Modern

- WILL DISCUSS THIS LATER IN THE UNIT

NOTES #2

THE BOHR MODEL AND BEYOND

- Elaboration of the Bohr Model

- Einstein: Special Theory of Relativity

- Light is made of particles (packets of energy called photons)  in it's wave.

- Mass (matter) and energy are 2 sides of the same coin. ---> This idea led to the atomic bomb

Continuous Spectrum (rainbow). R(ed) O(range) Y(ellow) G(reen) B(lue) I(ndigo) V(iolet)

(Dark Side of the Moon album cover)

- R =  Long wavelengths (gimma)

- V = Short wavelengths

- The ones with the shorter wavelengths bend more

- Light from one element, and you put it through a prism, ---> you get a line spectrum (so you get certain, very specific, wavelength of light) with only a few wavelengths. WHY???

- Ex: Hydrogen

- We put on 3D glasses and looked at the light. We saw a spectrum.

- Bohr did the math

- ¨Ground state¨ closest to the nucleus.

- ¨Excited state¨ jumps farther away from nucleus

- Falls back to ¨ground state¨ and the energy releases light spectrum.

HOMEWORK

1.) “Light and Energy” worksheet - Due Monday (find in handouts)

2.) TWO Webassigns Due Sunday Night (we will complete both by Sunday and on Monday we will submit it a second time)

The next blogger is Dorothy! Yay!

Today:

                We had a sub who took us to the Math Computer Lab, where we worked on a Rutherford Simulation Lab. If you were absent, check the handouts folder in moodle :)

We have lots of homework so make sure to complete the following for tomorrow:

- Rutherford simulation lab notes in journal (did in class, finish at home) pretty sure to check in
- 2 web assigns due at 11:59 PM... do them now. Stop procrastinating.
- Remember to complete your review packet due a week from today, do a little each night
- Take notes on the PowerPoints ON MOODLE, checking them in tomorrow

SO GO DO YOUR HOMEWORK AND GET SOME SLEEP!! GO CHEM!!

Class Blog 12-3-13

December 3, 2013

-First thing we did was we received a lesson about tests and lessons we should follow from Mrs. Friedmann.  

-Then we went over the test.

-We then began the new unit but did not get very far.

About the Test:

-The tests are much worse than what we are doing in class.

-We will have a new method of studying.

Future Lessons

-Advantages come with disadvantages, and disadvantages come with unexpected advantages. 

-Malcolm Gladwell

-Example: When people are more and more rich, the easier it is to parent and raise kids, however, it will begin to level off.  The richer it gets the harder it gets.  You can’t control them once they are powerful and independent.

-We are not using our given materials the way that it will help us.  You think you understand something just from understanding one problem and moving on.  You need to force yourself to understand it on your own.  Not just knowing the answer, you need to understand the answer and why you got the answer.  After understanding a problem, continue to work on similar problem until you understand it without using a key.

-Everything that comes with both advantages and disadvantages. Don't think you master something just because you get one right, consistency is key.

Future Tests

-DO THE REVIEW PACKET AND MORE PROBLEMS BEFORE YOU CHECK YOUR ANSWERS.

-We were given the review packet today and it will be due december 11th for credit.  There will be no video.  This way will force us to learn the material so we understand it not just a single problem.  Work on the review packet as we go through the unit bit by bit.

New unit: Atomic Theory and Periodicity

-The unit review packet is in moodle as well as the handouts.

-Notes

-This unit is on the atom.

-It all starts with the greeks

-first to have the idea of the atom

-in 400 BC the Greeks broke down matter into earth, air, water, and fire

-This is all we completed in class today.

Homework

-Two webassigns due wednesday night at 11:59 PM.

-Go on moodle and look at the two powerpoints and takes notes for tomorrow, they will be checked in THURSDAY because of a sub tomorrow. These are in the handouts folder about the history.

-Work on your review packet every day bit by bit until the end of the unit, due december 11th.

Next blogger is Allie B.

Monday December 2, 2013: Lab Test

Hi Everyone!

Today, we did a lab test conducted with the lab procedure we were assigned to do last week.

Here's some data for those who were absent:

Temperature of the tap water in the beaker - 20.7 degrees Celsius

Vapor pressure of the tap water - 18.323 mmHg

Mass of the tank with the gas - 13.42 g

Barometric pressure - 757.2 mmHg

Final volume of the eudiometer - 20.40 mL

Final tank mass - 13.36 g

The lab test is in the handouts folder so make sure to do it for tomorrow if you weren't in class today!

Other than that, no one else has homework if they already did the lab.


Next Scribe:.................................................................. Connor H!

Monday, November 25, 2013

November 25, 2013

We turned in the Molar Volume Lab and checked in the homework first, and then went over said homework (Gas Stoichiometry 1). Then we took a partner quiz, which we initially thought was for a grade, but turned out to be mainly for practice at the end. The answers for it should be on Moodle.

Homework:

Study for test

Correct partner quiz

Also, charge your calculators

The next blogger is Elaine S.