1.1 What is Chemistry?

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

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


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


25. Jodi So, using 3D molecule by Ben Mills (User:Benjah-bmm27/Wikimedia Commons). CK-12 Foundation;
    3D molecule: http://commons.wikimedia.org/wiki/File:Boron-trifluoride-3D-balls.png. CC BY-NC 3.0 (3D
    molecule available under public domain)


26. Jodi So, using 3D molecule by Ben Mills (User:Benjah-bmm27/Wikimedia Commons). CK-12 Foundation
    ; 3D molecule: http://commons.wikimedia.org/wiki/File:Beryllium-hydride-molecule-IR-3D-balls.png. CC
    BY-NC 3.0 (3D molecule available under public domain)


27. Ben Mills (User:Benjah-bmm27/Wikimedia Commons). http://commons.wikimedia.org/wiki/File:Ethylene-
    CRC-MW-dimensions-2D.png. Public Domain


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


29. Zachary Wilson, using 3D model by Ben Mills (User:Benjah-bmm27/Wikimedia Commons). CK-12 Founda
    tion; 3D molecule: http://commons.wikimedia.org/wiki/File:Acetylene-CRC-IR-3D-vdW.png. CC BY-NC
    3.0 (3D model available under public domain)