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Groundbreaking Experiments in Chemistry
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Miller-Urey Experiment
Stanley Miller and Harold Urey; Demonstrated that organic compounds could be synthesized from inorganic precursors under conditions simulating the early Earth's atmosphere.
Synthesis of Urea
Friedrich Wöhler; Refuted vitalism by synthesizing an organic compound from inorganic substances.
Haber Process
Fritz Haber and Carl Bosch; Provided a method for synthesizing ammonia from nitrogen and hydrogen gases, critical for agricultural fertilizers.
Discovery of Oxygen
Joseph Priestley and Carl Wilhelm Scheele; It led to the foundation of modern chemistry by overthrowing the phlogiston theory.
Franck-Hertz Experiment
James Franck and Gustav Hertz; Demonstrated the quantum nature of atoms and provided support for the Bohr model of the atom.
Discovery of Periodic Law
Dmitri Mendeleev; Created the first version of the periodic table of elements, predicting the existence and properties of new elements.
Grignard Reaction
François-Auguste Grignard; Development of the Grignard reagent, which is pivotal in the formation of carbon-carbon bonds in organic synthesis.
Atomic Theory
John Dalton; Provided the first scientific description of matter based on atoms and their properties.
Laws of Definite Proportions
Joseph Proust; Established that chemical compounds are composed of a fixed ratio of elements as defined by mass.
Law of Conservation of Mass
Antoine Lavoisier; It was a fundamental principle that led to the advancement in chemical reactions, stating that matter is neither created nor destroyed.
Chromatography
Mikhail Tsvet; Provided a method for the separation of plant pigments that led to the development of various forms of chromatography.
Discovery of Fullerenes
Richard Smalley, Harry Kroto, and Robert Curl; This experiment led to the discovery of a new form of carbon, fullerenes, also known as buckyballs.
Radioactivity
Henri Becquerel, and later Marie Curie and Pierre Curie; The discovery that some elements emit radiation spontaneously, which led to the development of nuclear chemistry.
Discovery of the Helix Structure of DNA
James Watson, Francis Crick, Rosalind Franklin, and Maurice Wilkins; Revealed the double helix structure of DNA, laying the groundwork for modern genetics.
Law of Multiple Proportions
John Dalton; Stated that when elements combine, they do so in the ratio of small whole numbers (compared to reactants).
Discovery of the Electron
J.J. Thomson; Determined the existence of negatively charged particles, which led to the understanding of the subatomic structure.
Discovery of the Noble Gases
William Ramsay and Lord Rayleigh; Identification of an entire group of inert gases in the periodic table previously unknown.
Electrolysis of Water
Anthony Carlisle and William Nicholson; Demonstrated the electrical decomposition of water into oxygen and hydrogen.
Cannizzaro Reaction
Stanislao Cannizzaro; A reaction that led to the clarification of the distinction between molecular and empirical formulas of compounds.
Discovery of Catalysis
Elizabeth Fulhame; Discovered the concept of catalysis, which is the process of speeding up chemical reactions due to the presence of a catalyst.
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