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The Paradigm Changes: But Do Our Students Know That? Tracking the Gradual and Continual Evolution of the Periodic Chart

Journal of College Science Teaching—December 1999/January 2000

Although Mendeleeff presented his periodic chart in a paper to the German Chemical Society in 1869, its acceptance was a gradual process. The changes in the chart and its movement to its present position inside the front cover of all texts is a perfect example of a change in paradigm, and allows us to show our students the evolution of a new idea.
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