Science 8 - History of the Periodic Table of Elements

Four element theory: Earth, Fire, Water, Air

Wrote the first list of elements containing 33 elements

Developed a table of atomic weights

Developed 'triads’, groups of 3 elements with similar properties

He proposed the 'Law of Octaves'

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Compiled a Periodic Table of 56 elements based on the periodicity of properties such as molar volume when arranged in order of atomic weight

Produced a table based on atomic weights but arranged 'periodically' with elements with similar properties under each other

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Discovered the Noble Gases

Concluded there were only 92 elements up to and including uranium

Synthesized transuranic elements

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