Activity Number
317
Editable
Overview and Learning Objectives
Classroom Practice
Central Concepts
Extensions and Connections
Activity Credits

Electrostatics (SAM) (a 7 pp activity for 1-2 class periods)

Interactive, scaffolded model

Activity Screenshot

Go To Activity


Follow the link above to start or download this activity.

This Activity Requires:

      Test your system to see if it meets the requirements

Important! If you cannot launch anything from this database, please follow the step-by-step instructions on the software page.

Please Note: Many models are linked to directly from within the database. When an activity employs our scripting language, Pedagogica, as do some of the "guided" activities, the initial download may take several minutes. Subsequent activities will not take a long time. See this page for further instructions.

Overview and Learning Objectives

Students learn that opposite charged particles attract to each other and particles with the same sign of charge repel each other. In addition they discover out that Coulomb's Law can be calculated by looking at the distance and the charge of each particle. They end the activity looking at the screening effect in systems such as the watery environment of cells.

Students will be able to:

• Explain how a neutral atom can become a charged particle, an ion.

• Define Coulomb forces as a result of like charges repelling each other and unlike charges attracting.

• Determine that the force generated between atoms is dependent on the amount of charge they carry and the distance between them.

• Explore the mathematical relationship described in Coulomb equations.

• Explain polarization in terms of charge redistribution.

• Give an example of how screening is at work in a biological system, such as a cell.

return to top

Classroom Practice

Teacher Guide:

http://sam.concord.org/publications/teacher-guides/electrostatics.ver6.pdf

return to top

Central Concepts

Key Concept:

Additional Related Concepts

Physics/Chemistry

  • Charge

return to top

Extensions and Connections

Fermi Lab's ARISE Project suggests the following enhancement to this SAM unit:

http://www.concord.org/~barbara/SAM/ARISE/ARISE_SAM_electrostatics.pdf

return to top

Activity Credits

Created by CC Project: SAM using Molecular Workbench

return to top

NSF Logo
These materials are based upon work supported
by the National Science Foundation under grant numbers
9980620, ESI-0242701, EIA-0219345, DUE-0402553, and 0628181.

Any opinions, findings, and conclusions or recommendations expressed in this
material are those of the author(s) and do not necessarily reflect
the views of the National Science Foundation.