1.1 What is Chemistry?

http://www.ck12.org Chapter 14. The Properties of Gases

15.4 References

1. User:Jurii/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Nitrogen-glow.jpg. CC BY 3.0


2. User:Danomagnum/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:MercuryBarometer.svg
   . Public Domain


3. Jodi So, using world map clip art by Jenny Boyd. CK-12 Foundation (clip art available at http://www.clker
   .com/clipart-world-map-32.html). CC BY-NC 3.0 (clip art in public domain)


4. Zachary Wilson. CK-12 Foundation. CC BY-NC 3.0


5. Rhett Maxwell. http://www.flickr.com/photos/rhettmaxwell/2443185091/. CC BY 2.0


6. Laura Guerin. CK-12 Foundation. CC BY-NC 3.0


7. Wade Baxter. CK-12 Foundation. CC BY-NC 3.0


8. Wade Baxter. CK-12 Foundation. CC BY-NC 3.0


9. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0


10. Jodi So. CK-12 Foundation. CC BY-NC 3.0