Comparing Attractive Forces

Explore different attractive forces between various molecules.

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Requirements

Investigate the difference in attractive force between polar and non-polar molecules by “pulling” apart pairs of molecules. While all molecules are attracted to each other, some attractions are stronger than others. Non-polar molecules are attracted through a London dispersion attraction; polar molecules are attracted through both the London dispersion force and the stronger dipole-dipole attraction. The force of attractions between molecules has consequences for their interactions in physical, chemical and biological applications.

This simulation was developed for the American Association of Chemistry Teachers (AACT), an organization that supports K-12 teachers of chemistry. AACT produced the teacher guide, student activity and answer key to accompany the simulation.

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► NSES Standards

► AAAS (2008) Standards

Copyright
© Copyright The Concord Consortium

Record Link
<a href="">The Concord Consortium. Comparing Attractive Forces. Concord: The Concord Consortium, 2014, November 17.</a>

AIP
Comparing Attractive Forces (The Concord Consortium, Concord, 2014, November 17), WWW Document, (https://concord.org/).

AJP
Comparing Attractive Forces (The Concord Consortium, Concord, 2014, November 17), WWW Document, (https://concord.org/).

APA
Comparing Attractive Forces. (2014, November 17). Retrieved 2017, August 20, from The Concord Consortium: https://concord.org/

Disclaimer: The Concord Consortium offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure.

Requirements

This activity runs entirely in a Web browser. Preferred browsers are: Google Chrome (versions 30 and above), Safari (versions 7 and above), Firefox (version 30 and above), Internet Explorer (version 10 or higher), and Microsoft's Edge.

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Comments

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Hello, Selecting different molecules is a great feature! I have two questions/comments: 1. Will you extend the molecule list to have other molecules except H and Br? If you already have this option, how can I (as a teacher) change the molecules? 2. Will it be possible to display the atomic radius and\or number of protons? even the relative sizes or any indication to these variables will help to explain the differences between the forces between the various molecules. Anyway, your SW is great and very useful. Thanks Asnat

Hi Asnat, We don't currently have a plan to extend this list of molecules. While possible for others to modify and make their own interactives, it is quite technically challenging at this time to do so. We do have a long-term goal of making it easier to create your own simulations like this, so subscribe to our eNews if you haven't already to stay up to date with the latest at Concord. While the relative atomic radii displayed are not precisely accurate (given the very large difference for H and Br) we did try to convey the visual idea that one is larger than another in a conceptually representative fashion. Thanks for the feedback, -Dan Damelin
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This resource is a part of the Concord Consortium's Interactions project.

Grade Level
Middle School, High School, Higher Education
Subject
Biology, Chemistry, Physics
Focus Area
Modeling and Simulation
Rating
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