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Russian chemist who developed a periodic table of the chemical elements and predicted the discovery of several new elements (1834-1907)
when CO2 is mixed with lime water, it makes calcium carbonate (blew through straw into lime water, gave off CO2) and the limewater turns milky- proving the existence of CO2
Identifies common lab gases (O2) by inserting a glowing wooden splint into a test tube with unknown gas
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