Interactive model, with minimal support
This Activity Requires:
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.
A chemical reaction is the process of a system going from one stable state to another stable state. A chemical system normally has multiple stable states possessing different potential energies. This model demonstrates the concept of activation energy, in which an experimenter must add energy to a system in order for it to acquire the potential energy to exist in a new stable chemical state. Students manipulate temperature and watch a microscopic reaction occur.
Students will be able to:
Activation energy is an empirical parameter used by chemists to describe the temperature dependence of the reaction rate constant. A high activation energy can make a reaction unlikely.
Additional Related Concepts
Activation energy enables us to live more or less in a chemically static everyday world. Without activation energy, many reactions would occur spontaneously.
Last Update: 12/07/2015
Maintainer: CC Web Team (email@example.com)
Document Options: Text-only / Accessible Version | Printable Version | E-mail this Page
Copyright © 2017, The Concord Consortium.
All rights reserved.
These materials are based upon work supported
by the National Science Foundation under grant numbers
9980620, ESI-0242701 and EIA-0219345
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.