CK-12 Physical Science Concepts - For Middle School

(Marvins-Underground-K-12) #1

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



  1. Flickr:sunshinecity. The combustion of methane powers a gas stove. CC BY 2.0

  2. Christopher Auyeung. Change in energy of an endothermic reaction. CC BY-NC 3.0

  3. Left: Greg O’Beirne (User:Gobeirne/Wikimedia Commons); Right: Josh Kelahan. Plants photosynthesize
    using sunlight or artificial light. Left: CC BY 2.5; Right: CC BY 2.0

  4. Christopher Auyeung. Change in energy for an exothermic reaction. CC BY-NC 3.0

  5. Thaddeaus. Wood burning in a bonfire is an exothermic reaction. Public Domain

  6. Christopher Auyeung. Comparing change in energy between exothermic and endothermic reactions. CC
    BY-NC 3.0

  7. Christopher Auyeung. Activation energy of endothermic and exothermic reactions. CC BY-NC 3.0

  8. Left: Ciar; Right: Jeff Keacher. Bread left out grows mold, bread in refrigerator stays fresh. Left: Public
    Domain; Right: CC BY 2.0

  9. CK-12 Foundation. No smoking sign. CC BY-NC 3.0

  10. Left: Flickr:thefixer; Right: Flickr:internets_dairy. Rusty iron hammer and nails. CC BY 2.0

  11. Zachary Wilson. Activation energy difference between catalyzed and non-catalyzed reactions. CC BY-NC 3.0

  12. Zachary Wilson.. CC BY-NC 3.0

  13. Christopher Auyeung. Valence shell of carbon. CC BY-NC 3.0

  14. Christopher Auyeung. Structural formula of methane. CC BY-NC 3.0

  15. Jodi So. Carbon-carbon bonds with different bond orders. CC BY-NC 3.0

  16. Left: Andy Mabbett; Right: Shira Gal. Beads on a string are similar to the structure of a polymer. CC BY 2.0

  17. Zachary Wilson. Cellulose is created by the polymerization of glucose. CC BY-NC 3.0

  18. Milk: http://www.bluewaikiki.com; Plastic bag: Ralph Aichinger; Toys: Kannan Shanmugam. Both milk bottles
    and toys are made from polyethylene. Milk and Plastic bag: CC BY 2.0; Toys: CC BY 3.0

  19. Zachary Wilson. Structure of ethylene and polyethylene. CC BY-NC 3.0

  20. Zachary Wilson. Structure of diamond. CC BY-NC 3.0

  21. Blade: U.S. Fish and Wildlife Service Southeast Region; Ring: Aleksey Gnilenkov. Uses of diamond. CC BY
    2.0

  22. Crystal: Laura Guerin (CK-12 Foundation); Lubricant: K. Murray. Structure and uses of graphite. Crystal:
    CC BY-NC 3.0; Lubricant: Public Domain

  23. Jynto. Structure of fullerene. Public Domain

  24. Asphalt: User:Shoecream/Wikipedia; Lighter: Rodrigo Amorim; Motor Oil: Interiot, retouched by Where
    next Columbus?, brand name removed by H Padleckas; Candle: Armin Vogel; Boots: Frank C. Müller;
    Vehicles: Laura Guerin (CK-12 Foundation). Uses for hydrocarbons. Asphalt: Public Domain; Lighter: CC
    BY 2.0; Motor Oil: Public Domain; Candle: CC BY 2.0; Boots: Public Domain; Vehicles: CC BY-NC 3.0

  25. Stella Blu. Coal mines are a major source of hydrocarbons. CC BY 2.0

  26. Jodi So. Ethane is a saturated hydrocarbon. CC BY-NC 3.0

  27. Christopher Auyeung. Alkanes can be both straight and branched molecules. CC BY-NC 3.0

  28. Jodi So. Isomers of butane. CC BY-NC 3.0

  29. Uesr:Rhododendronbusch/Wikimedia Commons. n-pentane is a straight chain isomer of pentane. Public
    Domain

  30. H Padleckas. Isopentane is a branched isomer of pentane. Public Domain

  31. H Padleckas. Neopentane is an isomer of pentane with four carbons attached to the center carbon. Public
    Domain

  32. Ethene: Jodi So (CK-12 Foundation); Good bananas: Image copyright Sally Scott, 2013; Bad bananas: Image
    copyright PeJo, 2013. Structure of ethene, as well as well it can be found. Ethene: CC BY-NC 3.0; Bananas:
    Used under licenses from Shutterstock.com

  33. Jodi So. Structure of benzene. CC BY-NC 3.0

  34. Jodi So. Structure of acetylene(ethyne). CC BY-NC 3.0

  35. Jason Kaechler. Application of acetylene(ethyne). CC BY 2.0

  36. Left: Laura Guerin (CK-12 Foundation); Tetrahymena (right): Robinson R. Cytochrome C is found in all
    living organisms, with only slight variations between species. Left: CC BY-NC 3.0; Tetrahymena: CC BY 2.5

  37. Christopher Auyeung. Structural formulas for glucose, fructose, and sucrose. CC BY-NC 3.0

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