1864 ⟶ Newlands Proposes Law of Octaves

John Newlands proposes the law of octaves, a precursor to th...
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1864

🎈 Avogadro Proposes Law of Gases

Amedeo Avogadro proposes Avogadro's law, that equal volumes of gases under constant temperature and pressure contain equal number of molecules.⟶
Avogadro Proposes Law of Gases (1811)
ChemistryGas LawsAvogadro's LawMoleculesAmedeo Avogadro19th Century SciencePhysical ChemistryIdeal Gas
ItalyItaly

⚛️ Cannizzaro's Table of Atomic Weights Leads to Resolution of Atomic Weights and Development of Periodic Law

Stanislao Cannizzaro, resurrecting Avogadro's ideas regarding diatomic molecules, compiles a table of atomic weights and presents it at the 1860 Karlsruhe Congress, ending decades of conflicting atomic weights and molecular formulas, and leading to Mendeleev's discovery of the periodic law.⟶
Cannizzaro's Table of Atomic Weights Leads to Resolution of Atomic Weights and Development of Periodic Law (1860)
Atomic WeightsMolecular FormulasChemistryPeriodic TableStanislao Cannizzaro19th Century ScienceKarlsruhe CongressDiatomic MoleculesMendeleev
ItalyItalyGermanyGermany

🌀 De Chancourtois Publishes Telluric Helix, Early Periodic Table

Alexandre-Emile Béguyer de Chancourtois publishes the telluric helix, an early, three-dimensional version of the periodic table of the elements.⟶
De Chancourtois Publishes Telluric Helix, Early Periodic Table (1862)
Periodic TableChemistryAlexandre-Emile Béguyer de ChancourtoisElement Classification19th Century ScienceTelluric HelixChemical Elements
FranceFrance

🎵 Newlands Proposes Law of Octaves

John Newlands proposes the law of octaves, a precursor to the periodic law.⟶
Newlands Proposes Law of Octaves (1864)
Law of OctavesPeriodic LawChemistryJohn NewlandsElement Classification19th Century SciencePeriodic Table
United KingdomUnited Kingdom

🗓️ Lothar Meyer Develops Early Periodic Table

Lothar Meyer develops an early version of the periodic table, with 28 elements organized by valence.⟶
Lothar Meyer Develops Early Periodic Table (1864)
Periodic TableChemistryLothar MeyerElement Classification19th Century SciencePeriodic LawValenceChemical Elements
GermanyGermany

⚖️ Guldberg and Waage Propose Law of Mass Action

Cato Maximilian Guldberg and Peter Waage, building on Claude Louis Berthollet's ideas, proposed the law of mass action.⟶
Guldberg and Waage Propose Law of Mass Action (1864)
Law of Mass ActionChemical KineticsCato Maximilian GuldbergPeter WaageChemistry19th Century ScienceChemical EquilibriumClaude Louis Berthollet
NorwayNorway