Chem History

Timeline created by mkskitka
  • Jan 1, 1220

    Robert Grosseteste lays out the first documented early framwork of the scientific method in his publications

    Robert Grosseteste lays out the first documented early framwork of the scientific method in his publications
  • Jan 1, 1530

    Paracelsus develops the study of iatrochemistry

    Paracelsus develops the study of iatrochemistry
    Image CitationCitationIt is a branch of Alchemy devoted to extending life.
  • Jean Beguin publishes an early chemistry textbook,and in it creates the first chemical equation.

  • Torricelli, Evangelista invented the mercury barometer.

    Torricelli, Evangelista invented the mercury barometer.
    Image Citation[Citation](Torricelli, Evangelista (1643)Invented the mercury barometer. )
  • Lavoisier, A.L. discovers Nitrogen

  • Dalton, John proposed atomic theory based upon measurable masses

    [Citation](Dalton, John (1766-1844)Proposed atomic theory based upon measurable masses )
  • Rutherford publishes atomic theory

    CitationHe described the atom as having a positive nucleus surrounded by negative orbiting electrons. This model suggested that most of the mass of the atom was contained in the nucleus
  • Niels Bohr creates his own model of atomic structure in which he applies the quantum theory

    Niels Bohr creates his own model of atomic structure in which he applies the quantum theory
    Image CitationCitationBohr's model suggested that electrons orbited around the nucleus and greatly determined an atoms chemical properties. He also assumed that electrons traveled in stationary orbits defined by their angular momentum from the quantum theory.
  • John Thomson discovers electrons

    John Thomson discovers electrons
    Image CitationCitationHe discoved electrons and determined that all mater contained them.