1.1 What is Chemistry?

20.4. References http://www.ck12.org

21.6 References

1. Courtesy of NOAA. http://commons.wikimedia.org/wiki/File:NOAA_arctic_spring_1950_corp1104.jpg. Pub-
   lic Domain


2. User:MONGO/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Steamboat_Geyser.jpg. Pub-
   lic Domain


3. J. Willard Gibbs. http://commons.wikimedia.org/wiki/File:Gibbs_Josiah_Willard.jpg. Public Domain


4. User:JGvBerkel/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Haber_Ammonia.JPG. Pub-
   lic Domain


5. User:Chemicalinterest/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Silver%28I%29_chl
   oride.JPG. Public Domain