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Entropy tends to increase ("Skeletal chemistry" 7 of 9)


Created by jrose, last updated 2015-11-13

"While the dispersal of energy and matter in disorder is easy to accept, we need to weld the thought that dispersal may be linked to a process that it drives in a constructive sense."


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Making Sodium Acetate: Hot Ice

Even without a commercial hand warmer, it's possible to manufacture sodium acetate using baking soda and vinegar -- an alternative to the traditional fizzing reaction using those ingredients.

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Balloon Isometrics

When you stretch a balloon, it gives up some of the heat already inside it, and you can feel this on your forehead. Introducing the idea that the stringy polymers of the balloon release heat when straightened is another step towards seeing how heat and structure are related.

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Electroplating

By using the energy released by the electrochemical reaction in a battery, other reactions can be driven, such as electroplating the zinc from a galvanized nail onto the copper of a penny. The battery is "running down" while the plating is building up.

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"Skeletal chemistry" article

This is one of the nine central ideas that Peter Atkins lays out in his 2005 article, "Skeletal chemistry." Each of the other ideas has its own list in SMILE.