1. Bond Character Investigation
Experimentally determine how atom electronegativity impacts bond type. Identify bond type based on atom polarity.

2. How does atom electronegativity affect bond character and molecular polarity?
Purpose: explore the effect of atom electronegativity on bond character and molecular polarity. We will be using a PhET simulation to explore these topics.
You will work in your table group to complete this lab.
The investigation will be presented as an argument poster that will be completed by your group.
Friday 11/30 we will “present” our poster for peer review.

3. How does atom electronegativity affect bond character and molecular polarity?
You will be using a computer simulation to explore the effect of atom electronegativity on bond character and molecular polarity.
With your table construct a hypothesis about the question. What knowledge do you currently have that leads you to this conclusion?
Investigate the simulation:
What type of data can/will you collect?
How do you plan on collecting it (procedure)?
How will you analyze your data (Graph/calculations)?
Create a data table for collection
Check in with Mrs. Kemp
Collect your data

4. Schedule of Events
Tuesday: Introduction & Design Experiment Wednesday: Collect Data Thursday: Analyze Data & Start Argument Poster Friday: Finish Poster, “Present”, & Revise

5. Your Task Tuesday 15 minutes
Read the background for the lab at your table (make sure this stays in the classroom!!!)
With your table develop a hypothesis for the question: How does atom electronegativity affect bond character and molecular polarity?
Make sure to describe the following scenarios:
Atoms with equal/almost equal electronegativity
One atom with a larger electronegativity
One atom with a much larger electronegativity
What is happening to the electrons in each scenario?

6. Your Task Tuesday 30+ minutes
Within your table make groups of 2-3 (not 4)
Get a computer
Investigate the simulation “Molecule Polarity” (Link on my website)
What data can you collect?
As a whole group:
What data will you collect?
How do you plan on collecting it? (Procedure)
How will you analyze the data?
Then check in with me
Data collection & analysis tomorrow

7. Your Task-Wednesday
Use the procedure & data table your group made yesterday to collect the necessary data to answer the question: How does atom electronegativity affect bond character and molecular polarity?
Use excel or word to generate a table or chart to display your data.
If you have leftover time begin to layout your poster using the template on the back page.
Claim-revised hypothesis, what does your data suggest is the correct answer to the guiding question
Evidence-your analyzed data
Justification-How does the Evidence support your claim? What scientific reasons support your claim?
Begin writing question/section titles/pictures on a blank poster board

8. Argument Presentation Poster
Restate the question
State a claim
This is the answer your group has to the experimental question
Provide evidence that supports your claim
This is not raw data rather data that has been analyzed
Usually in graph form (don’t forget how I like graphs displayed!)
Justify how the evidence is important to supporting your claim
How does the evidence link to your claim?
What is the scientific reasoning behind your claim?
How does the evidence support your reasoning?
Argument Presentation Poster

9. Argument Poster Claim Evidence Justification
Does your hypothesis answer the question and is supported by the data?
If not you will need to rework your hypothesis so that it is supported by your collected data.
Ex: As the electronegativity difference between bonded atoms increases bond character does this and polarity does this.
Evidence
This is your graph, table, or diagram
Justification
Support your claim using your high, mid, and low points:
When the difference in electronegativity between the atoms is highest the bond character is…the polarity is…
What is your reasoning behind each of these scenarios?
This is because the more electronegative atom is able to…

10. Poster Rubric Question Question is restated. Evidence (Part 1)
1 point
2 points
3 points
4 points
Question
Question is restated.
Evidence (Part 1)
Data Representation
Evidence is presented for part but not all of the claim. All data has proper units. Example calculations are shown.
Evidence is presented for all claims. All data is given with units. Example calculations are shown.
Evidence (Part 2)
Graph
Graph has plotted data.
Graph has plotted data & a scale.
Graph has plotted data, a scale, and some titles.
Graph has a title, appropriate axes, scale, trend line, & plotted data.
Evidence (Part 2-Alternate)
Table
Table with data
Table with data & title or units
Table with data & units.
Table with data, units, & caption.
Claim
A claim is provided to answer the guiding question with limited accuracy.
A claim is provided to partially answer the guiding question with accuracy.
A claim is provided to answer the guiding question completely with limited some inaccuracies
A claim is provided that accurately and completely answers the guiding question.
Justification
(Points x 2)
One of the following is true: Claim is consistent with the evidence. Explains the importance of the evidence or inclusion to the scientific concept. Scientific terms are used correctly.
Two of the following are true: Claim is consistent with the evidence. Explains the importance of the evidence or inclusion to the scientific concept. Scientific terms are used correctly.
Claim is mostly consistent with the evidence. Explains the importance of the evidence or inclusion to the scientific concept. Scientific terms are used correctly.
Claim is consistent with the evidence. Explains the importance of the evidence and inclusion to the scientific concept. Scientific terms are used correctly.
Neatness
Poster is neat (organized) and readable.
Total
/20

11. Poster Argument Session
Pick up 5 sticky notes.
Take a poster rubric with you.
Check ALL boxes of the rubric.
If they do not get 100% for a section leave them a note.
Say something nice.
Total up the points and give them a score. (out of 20)
Sign your name.
Repeat steps for 4 more posters (visit 5 posters total)
Great job on your poster I like the fancy font for your title. I think that you could work on incorporating more scientific reasoning into your justification.
-Mrs. Kemp 18/20

12. 11/2 Opener
What is molecular polarity? How would you describe bond character?

13. 11/3 Opener
Draw the lewis dot and determine the VSEPR shapes of the following elements? BCl3 *Exception Boron is happy w/ 6e- SiH4

14. 11/6 Opener
Draw the lewis dot and determine the VSEPR shapes of the following elements: NBr3 HNO3

15. 11/7 Opener
Draw the lewis dot and determine the VSEPR shapes of the following elements: SO3-2 NO2-1

16. 11/8 Opener
Draw a lewis dot diagram & describe the reaction between Li (lithium) and Cl (Chlorine). Li + Cl  LiCl How does this help you describe why alkali metals react so violently with water?