Interactive model, with minimal support
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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
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These materials are based upon work supported
by the National Science Foundation under grant numbers
9980620, ESI-0242701 and EIA-0219345
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