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Oxygen
Oxygen was discovered by Joseph Priestley but invented by Antoine Lavoisier. It was discovered by heating mercuric calx. -
Electricity Transforms Chemicals
Davy discovered this when he melted pot ash and ran some wires from a big battery into the ash. Potassium formed from it. -
Atoms Combine into Molecules
Discovered by Amedeo Avogadro when he combined equal volumes of different gases, but found that they produced a bigger volume than what was expected. -
Synthesis of Urea
Woehler discovered this when he made the same crystals out of inorganic chemicals that he did with organic chemicals. -
Atoms Have Signatures of Light
Discovered by Kirchoff and Bunsen when they held different substances over a flame and the substances changed color -
Periodic Table of Elements
Mendeleyev created the Periodic Table of Elements when he was trying to figure out how ti organize all the elements to teach his students. After organizing them many different ways, he found a perfect pattern. -
Radioactivity
Curie discovered radioactivity by chemically extracting uranium from uranium ore -
Atomic Theory
Discovered by John Dalton. The Atomic theory states that elements are made up of tiny particles called atoms. -
Electrons Form Chemical Bonds
Bohr discovered that all electrons orbit around the nucleus and how the amount of electrons in a element determines its properties. -
Chemical Structure
Kekule invented this by taking an elements atomic symbol and adding marks to it to represent how they bond to each other.