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History of the Periodic Table: Difference between revisions
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== Early Organizational Endeavors== | == Early Organizational Endeavors== | ||
In the Middle Ages, alchemists realized that some of the substances they were working with were pure. Meaning that they were not composed of other substances. In 1793 the first list of elements was published. It was Antoine Lavoisier, a great French chemist, that created a list of thirty substances that would not break down, and named them elements. Later in 1803 John Dalton came up with his own list of elements. He revised his list several times, and eventually ended up with sixty documented elements. | In the Middle Ages, alchemists realized that some of the substances they were working with were pure. Meaning that they were not composed of other substances. In 1793 the first list of elements was published. It was Antoine Lavoisier, a great French chemist, that created a list of thirty substances that would not break down, and named them elements. Later in 1803 John Dalton came up with his own list of elements. He revised his list several times, and eventually ended up with sixty documented elements. <ref name=BJU/> | ||
== The Discovery of Element Periodicity == | == The Discovery of Element Periodicity == | ||
