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published by the PhET
This applet is designed for study of the kinetics of chemical reactions. It uses a model gas of three atomic species to illustrate the formation and disassociation of the different possible diatomic molecules. The user can run experiments with either one of each atom type or a gas of many atoms, controlling the density of the various species, the temperature, and energetics of the reaction.  Data collection tools are available to calculate rate coefficients. Tips for teachers are included, plus activities designed to adapt the simulation to a variety of course levels.  The direct link to the simulation is given as a mirror URL.

This is part of a larger collection developed by the Physics Education Technology project (PhET).

Please note that this resource requires Flash.
Subjects Levels Resource Types
General Physics
- Measurement/Units
Other Sciences
- Chemistry
Thermo & Stat Mech
- Kinetic and Diffusive Processes
= Approach to Equilibrium
= Kinetic Theory
- Lower Undergraduate
- High School
- Informal Education
- Instructional Material
= Activity
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
- text/html
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Access Rights:
Free access
© 2007 University of Colorado, Physics Education Technology
Additional information is available.
activation energy, catalysts, chemical equilibrium, rate coefficients, reaction rates
Record Cloner:
Metadata instance created November 15, 2007 by Alea Smith
Record Updated:
August 18, 2016 by Lyle Barbato
Last Update
when Cataloged:
November 15, 2007
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Record Link
AIP Format
(PhET, Boulder, 2007), WWW Document, (
PhET Simulation: Reactions & Rates (PhET, Boulder, 2007), <>.
APA Format
PhET Simulation: Reactions & Rates. (2007, November 15). Retrieved July 19, 2024, from PhET:
Chicago Format
PhET. PhET Simulation: Reactions & Rates. Boulder: PhET, November 15, 2007. (accessed 19 July 2024).
MLA Format
PhET Simulation: Reactions & Rates. Boulder: PhET, 2007. 15 Nov. 2007. 19 July 2024 <>.
BibTeX Export Format
@misc{ Title = {PhET Simulation: Reactions & Rates}, Publisher = {PhET}, Volume = {2024}, Number = {19 July 2024}, Month = {November 15, 2007}, Year = {2007} }
Refer Export Format

%T PhET Simulation: Reactions & Rates %D November 15, 2007 %I PhET %C Boulder %U %O application/java

EndNote Export Format

%0 Electronic Source %D November 15, 2007 %T PhET Simulation: Reactions & Rates %I PhET %V 2024 %N 19 July 2024 %8 November 15, 2007 %9 application/java %U

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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

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