Figure 1. Make your own new discoveries about a great outshoot of pneumatics with this interactive worksheet about the Carnot cycle for an ideal gas; or, if you’re accomplished, also a non-ideal gas. See this SymMath resource.

Figure 2. Wöhler did not need a kidney to synthesize urea. See the article: Wöhler’s Synthesis of Urea: How Do the Textbooks Report It?

Figure 3. August Kekulé’s speech about his discovery was translated and published in JCE. It reveals that the cartoon is not too far off: August Kekulé and the Birth of the Structural Theory of Organic Chemistry in 1858. A 3D representation of the famous structure Kekulé illuminated, benzene, is available as part of the JCE Featured Molecules collection.

Figure 4. Liebig invented this piece of glassware which is the basis of the ACS logo. He was also one of history’s most innovative chemical educators. See the article: From Justus von Liebig to Charles W. Eliot: The Establishment of Laboratory Work in U.S. High Schools and Colleges.

Figure 5. Father Thames can now consult this JCE Classroom Activity about how to build an inexpensive yet remarkably effective filter to clean dirty water: JCE Classroom Activity #60: Water Filtration.

Figure 6. To be able to read the most complicated graduated scale, the vernier scale, see this movie from Chemistry Comes Alive! Vol. 6, available as part of JCE Web Software.

Figure 7. The colorful results of the mysterious ligand substitution are beautifully illustrated in this article and the links accompanying the online version: A Colorful Look at the Chelate Effect.

Figure 8. For a great example of academics in football, see the articles in this issue that feature celebrating ACS National Chemistry Week: Having a Ball with Chemistry—Chemistry in Sports.

Figure 9. How does helium rise? A dynamic (not just quantitative) answer is given in this article, and a lot of interesting thoughts come out of it: Why Does a Helium-Filled Balloon “Rise”? And a nice refinement to the calculation: On the Buoyancy of a Helium-Filled Balloon.