Definition: The activation energy is denoted by Ea. It is the minimum amount of energy required to initiate a reaction.
Activation Energy - Ea - Chemistry Definition
By Anne Marie Helmenstine, Ph.D., About.com
Suggested Reading
Chemistry Glossary IndexChemistry 101Encyclopedia of Chemistry
New posts to the Chemistry forums:
Explore Chemistry
Must Reads
More from About.com
Work Hard, Travel Easy
The best tips for business travelers.Dog Care
Get tips on training and caring for dogs of all ages.48 Hours in Vegas
Plan a hot weekend in Sin City.Hotel Advice
The must-stay hotels worldwide.
©2008 About.com, a part of The New York Times Company.
All rights reserved.