power notes bohr models- day 1 (2)
TRANSCRIPT
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Today in ScienceYou will Need:1)Pencil/Pen, Colored Pencils, Highlighters or Markers; Periodic Table – Pgs. 196-1972)Log #3 – Bookshelf- update3)Power Notes – Bohr Model Drawings + Density Review– 1 pages 2 sides – Bookshelf = This is only Part 14)Group Debrief
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Reminders1. End of the Quarter is Friday, May 28th
2. Housekeeping – Debrief? Grade Print out3. Binder Check #2 – Due Wednesday at the
beginning of class4. Minimum Days on Tuesday and Thursday
of this week– 12:10 Dismissal5. Power Notes- Bohr Model Drawings
Colored Pencils, Highlighters or Markers- must highlight notes; Periodic Table
6. Review and Reflect on Page One Only
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1) Put your name, date and period at the top of the page.
2) Fold you paper in half3) Left Column Title: What Went Well4) Reflect on the cooperative experience;
what positive things did you hear, feel, see by working in a group.
5) Please write a minimum of 3 things that went well in your group.
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1) Right Column Title: What Could Go Better
2) Reflect on the cooperative experience; without naming names, what things did you hear, feel, or see in your group that did not go well.
3) Please write a minimum of 3 things that could have gone better.
4) We only have control of how we respond, what could have been done to improve the situation?
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Capture in 5-6 sentences:1) I feel cooperative groups……….2) In my life I know I will need to depend on
other to …………….3) I also know people will respond to me
based on ……………4) In a cooperative group it is always
important that ………..
5) I don’t understand or I do understand why cooperative groupings are important because ………..
Highlight the starters
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Reminders1. End of the Quarter is Friday, May 28th
2. Housekeeping – Debrief? Grade Print out3. Binder Check #2 – Due Wednesday at the
beginning of class4. Minimum Days on Tuesday and Thursday
of this week– 12:10 Dismissal5. Power Notes- Bohr Model Drawings
Colored Pencils, Highlighters or Markers- must highlight notes; Periodic Table
6. Review and Reflect on Page One Only
![Page 7: Power Notes Bohr Models- Day 1 (2)](https://reader035.vdocument.in/reader035/viewer/2022062514/557ea1d6d8b42ac5658b4891/html5/thumbnails/7.jpg)
Bohr Model Drawings
The concept of elements has been around since ancient times. We now know that each element has its own unique number of protons. Although each element can have a varying amount of neutrons(isotope) or electrons(ion), its basic characteristics, properties and how it reacts with other elements is basically the same.
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Bohr Model Drawings
Neils Bohr is the scientist responsible for the atomic model that looks very much like our solar system. The Periodic Table not only tells us about each individual atom but is also set up to show us how to draw the Bohr Model….well, at least for the first three rows.
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Bohr Model Drawings
The Bohr model is helpful in not only understanding the electron configuration but for also understanding why and how some elements will bond with other elements.
-Magic # is 8,-Magic # is 2 for H and He
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Bohr Model of Carbon
Atomic # = Protons “+” and Electrons “-” if neutralAtomic Mass =
Sum of Protons and Neutrons
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Electron Configuration
Valence electrons
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Valence and the Periodic Table
Example:
1. The columns or families each element is located in tells you the number of valence electrons for families 1, 2…..13,14,15,16,17 and 18
- Elements in Family 1 have 1 valence electrons
- Elements in Family 2 have 2 valence electrons
- Elements in Family 13 have 3 valence electrons
2. The pattern continues up to Family 18
3. The pattern DOES NOT occur for the Transition elements (short columns)
Transition Elements
REVIEW
Remember: Metals give away their electrons, while nonmetals take.
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Basic Configuration
Example:
1.The Periodic Table Connections – 1st 3 rows only
-Rows = # of shells or levels around the nucleus-# of elements in each row = # of electrons found on that level
Row 1 =
1 shell around nucleus; maximum of 2 electrons on shell
Row 2 =
2 shells around nucleus; maximum of 8 electrons on shell
Row 3 =
3 shells around nucleus; maximum of 8 electrons on shell
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Lewis Dot Diagrams
Example:Beryllium is in Family #2
1. Illustrated using elements Chemical Symbol and DOTS to represent its’ VALENCE electrons.
2. Beryllium has a VALENCE of 2
Be1
2
34
5
67
8
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Drawing the Bohr Models and Lewis Dot Diagrams
1. Locate the element on the P.T.2. Record the info about the
element.3. Draw the nucleus and write
the # of each type of subatomic particle inside.
4. Draw the correct amount of shells outside the nucleus based on the row #
5. Start loading electrons on the specific shells from the inside out.
6. Remember: YOU MUST load each shell full before moving farther out to the next shell.
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Let’s try a couple:
LithiumRow=Protons =Neutrons =Electrons =
Lewis Dot
2
3+
7-3=4
3-
P = 3+N = 4
2-1-
Li
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Let’s try a couple:
MagnesiumRow=Protons =Neutrons =Electrons =
Lewis Dot
3
12+24-12=1212-
P = 12+N = 12
2-8-
Mg
2-
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Let’s try a couple:
OxygenRow=Protons =Neutrons =Electrons =
Lewis Dot
2
8+
16-8=88-
P = 8+N = 8
2-6-
O
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Homework1) Review and Reflect on Page one of Power Notes – Bohr Model Drawings
2)Minimum Day tomorrow – Per. 1,3,4,5,7
3)Binder Check #2- Due Wed.