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