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Intermolecular Forces: Assignment

Assignment

INTERMOLECULAR FORCE VIDEO PROJECT

 

You and a partner will research intermolecular force (IMF) attractions and prepare a video that explains in a manner comprehensible to someone who has not studied chemistry:

  1. the nature of IMF attractions,
  2. the structure(s) of atoms and molecules that causes these forces,
  3. most importantly, using a physical phenomenon, demonstrate the way these attractive forces affect properties of matter and cause this physical phenomenon.

Your video should be between 3 and 5 minutes long and the video time should be allocated approximately half to the nature of IMF and half to the IMF application.


Once
both of you have researched and selected what application of IMF you would like to demonstrate in your video (I expect the explanation of the nature of IMF attractions and molecular structure with be similar across all groups), sign up to reserve that application on CANVAS.  My goal is to have the class present as many applications as possible.  I will use your submissions to minimize duplication of applications in the videos.  If there are multiple requests to present the same application, the earliest submission will receive priority. I will also review your submissions, so I can let your group know your idea is a feasible demonstration of IMF attractions.

 

Now, get the materials and do it! You will create a video of your demonstration and post it on Youtube

(or other video hosting site of your choice).  If you are not comfortable having a video be public, that’s

fine, you can share it with me only and not have it be publicly viewable (although we will be watching

them in class). Again, this video should be longer than 3 minutes, but shorter than 5 minutes.

 

GRADING AND VIDEO REQUIREMENTS

 

Video Element

Point Value

Title clip

5 pts

Discussion of intermolecular forces and the nature of atoms and molecules that produce IMF attractions

20 pts

Introduction of the IMF demonstration you are about to do

5 pts

Do the demonstration—clear shots and good visibility required.  Explain how the demonstration is an example of IMF attractions. In the process, CLEARLY connect your explanation of IMF attractions and your demonstration of an application of IMF attractions.  Use of graphics, animations, and/or images is encouraged.

20 pts

Overall quality and viewer enjoyment. Do not go for the “shaky cell phone cam” look. Your audio needs to be clear. Adding music/ transitions to your video is key to an enjoyable video.

10 pts

Bibliography of research sources

10

Using your dedicated class time effectively.

5 pts

Total

75 pts

   
  • There are bonus points available for the most creative video in the class.
  • If your video is too short ( < 3 min) or too long ( > 5 min), there will be a 15% penalty.
  • Total grade 75 TEST POINTS, no corrections or re-dos!

Video editing tips:

  • You may use your phone or a school Ipad to record the video.
  • Use a tripod, or some other method to keep the camera at rest (not shaky).
  • Make sure that the person speaking in your video can be heard - or else it really isn’t worth it for the explanation. This is very important.
  • Graphics, animations, and visual depictions of the property you are demonstrating will help the viewer understand your demonstration.
  • Make sure that lighting is bright, and everything can be seen well.
  • Plan out what you do and say- write it down
  • We’re available during flex should you need help with this project.
  •  
  • IMPORTANT DATES AND DEADLINES

Tues/Weds, Jan. 22/23

Ms. Bogas will discuss research protocols for the project in class, notify me of the identity of the two partners in your group

Friday, Jan. 25

The document describing your demonstration of IMF attractions must be posted to CANVAS.  To minimize number of groups demonstrating the same IMF application, the group posting the demo first will be given priority.

Tues/Weds, Jan. 29/30

A portion of the 100-minute class block dedicated for project work (to take place after peer review of CEJs).  Have materials ready to go to work on project during class.

Tues/Weds, Feb. 5/6

The 100-minute class block dedicated for project work.  Have materials ready to go to work on project during class.

End of day, Weds Feb. 6

Periods 1 and 7 - Deadline to post videos or link to CANVAS to avoid technical issues prior to presentation date

End of day, Thurs Feb. 7

Period 5 - Deadline to post videos or link to CANVAS to avoid technical issues prior to presentation date

Thurs/Fri, Feb. 7/8

Presentation of videos to class


 

1.       Intermolecular forces (IMF) - electrostatic attractive forces between molecules and atoms

a.       Types of IMF                       

                           i.      London dispersion forces

                         ii.      dipole-dipole interactions

                       iii.      hydrogen bonding

                       iv.      ion-dipole interactions

                         v.      ion-ion interactions

2.       IMF effects properties of matter:                                                                                                                                     

a.       phase or state of matter (solid, liquid, gas)       

b.       melting point of a substance       

c.       boiling point of a substance       

d.       attraction between molecules in the liquid phase

                           i.      surface tension

                         ii.      viscosity

                       iii.      adhesion and capillary action

                       iv.      cohesion

3.       Applications of IMF                   

a.       Special properties of water (surface tension, adhesion, capillary action, decreased density in solid phase, unique capabilities as a solvent)

               i.      water transport in plants through capillary action

b.       protein folding

c.       DNA double helix structure

d.       adhesives (e.g., glue and bonding materials together)

                           i.      medical uses (bandages, implants)

                         ii.      industrial packaging

                       iii.      construction materials

e.       liquid crystal displays (LCD)

f.        chromatography - separation of mixtures using attractive forces

                           i.      paper chromatography

                         ii.      thin layer chromatography

                       iii.      liquid phase chromatography

                       iv.      gas phase chromatography

                         v.      gel electrophoresis

g.       carbon fiber materials

h.       soaps, detergents and surfactants

i.         solubility of one substance in another

                           i.      “like dissolves like” or polar substances dissolve polar substances and nonpolar substances dissolve nonpolar substances