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The History of Chemistry traces humanity's understanding of matter, beginning with ancient metallurgy and alchemy, advancing through the scientific revolution with figures like Robert Boyle and Antoine Lavoisier, the development of atomic theory by John Dalton and Dmitri Mendeleev's periodic table, and culminating in modern quantum chemistry and molecular biology. More Less
350 BC
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Aristotle formalized the idea that all matter is composed of four elements: earth, water, air, and fire. This theory dominated Western thought about matter for nearly two thousand years.
Image source: Classical element
300 AD
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The Greco-Egyptian alchemist Zosimos produced some of the oldest known books on alchemy, describing distillation apparatus and mystical interpretations of transmutation that shaped alchemical tradition.
Image source: Zosimos of Panopolis
800 AD
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Known as the father of Arabic chemistry, Jabir ibn Hayyan systematized laboratory techniques such as crystallization and distillation and introduced experimental methodology to the study of substances.
Image source: Jabir ibn Hayyan
900 AD
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The Persian physician Rhazes classified minerals, plants, and animal substances chemically and wrote the Kitab al-Asrar (Book of Secrets), an important early laboratory manual.
Image source: Abu Bakr al-Razi
1300
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This influential Latin alchemical text, attributed to a pseudo-Geber, presented a corpuscular theory of matter and detailed practical laboratory procedures used for centuries.
Image source: Pseudo-Geber
1527
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Paracelsus rejected classical element theory in favor of sulfur, mercury, and salt principles, promoting the use of chemistry in medicine and founding the tradition of iatrochemistry.
Image source: Paracelsus
1543
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While primarily astronomical, Copernicus's heliocentric model encouraged a broader shift toward observation and mathematics in natural science, indirectly influencing the scientific approach to matter.
Image source: De revolutionibus orbium coelestium
1648
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Van Helmont identified carbon dioxide and introduced the word 'gas' into scientific vocabulary, recognizing distinct vapors produced by chemical reactions and bridging alchemy and modern chemistry.
Image source: Jan Baptist van Helmont
1661
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Boyle's landmark work criticized Aristotelian elements and defined an element as a substance that cannot be broken down further, establishing chemistry as a rigorous experimental science.
Image source: The Sceptical Chymist
1662
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Robert Boyle demonstrated that the pressure of a gas is inversely proportional to its volume at constant temperature, one of the first quantitative laws in chemistry.
Image source: Boyle's law
1667
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Becher and later Georg Ernst Stahl proposed that combustion released a substance called phlogiston. The theory dominated explanations of burning until it was overturned by Lavoisier's oxygen chemistry.
Image source: Phlogiston theory
1669
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The German alchemist Hennig Brand isolated phosphorus from urine while searching for the philosopher's stone, becoming the first person credited with discovering a new chemical element.
Image source: Hennig Brand
Aug 1, 1774
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Priestley isolated 'dephlogisticated air' by heating mercuric oxide. His discovery of oxygen was pivotal, though he interpreted it through phlogiston theory, which Lavoisier soon replaced.
Image source: Joseph Priestley
1777
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Antoine Lavoisier demonstrated that combustion involves combination with oxygen, named the gas, and established the law of conservation of mass, founding modern quantitative chemistry.
Image source: Antoine Lavoisier
1789
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Lavoisier's textbook presented a systematic nomenclature and a list of 33 elements, cementing the Chemical Revolution and providing the foundation for modern chemistry education.
Image source: Traité Élémentaire de Chimie
1800
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Alessandro Volta created the first battery, enabling continuous electric current. This tool allowed chemists like Davy and Berzelius to use electrolysis to discover new elements.
Image source: Voltaic pile
1803
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Dalton proposed that matter consists of indivisible atoms combining in fixed ratios, explaining chemical reactions quantitatively and transforming chemistry into an atomic science.
Image source: John Dalton
1807
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Using electrolysis, Davy isolated the highly reactive metals potassium and sodium, followed by calcium, strontium, barium, and magnesium, dramatically expanding the known elements.
Image source: Humphry Davy
1811
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Avogadro suggested that equal volumes of gases contain equal numbers of molecules, distinguishing atoms from molecules and later enabling accurate determination of atomic weights.
Image source: Amedeo Avogadro
1813
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Berzelius devised the system of using letters to symbolize elements, such as O for oxygen and H for hydrogen, creating the universal language of chemical formulas still used today.
Image source: Jöns Jacob Berzelius
1828
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Friedrich Wöhler converted ammonium cyanate into urea, disproving vitalism and demonstrating that organic compounds could be made from inorganic materials, founding organic synthesis.
Image source: Friedrich Wöhler
1865
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August Kekulé proposed that benzene consists of a six-membered carbon ring with alternating bonds, unlocking the structural understanding of aromatic organic chemistry.
Image source: August Kekulé
1867
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Nobel stabilized nitroglycerin in absorbent material to create dynamite, revolutionizing construction and mining and illustrating the industrial power of applied chemistry.
Image source: Dynamite
1869
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Mendeleev arranged elements by atomic weight and predicted undiscovered elements like gallium and germanium. His periodic table became the organizing framework of all chemistry.
Image source: Periodic table
1884
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Arrhenius explained that salts dissolve into charged ions in solution, establishing the foundations of acid-base chemistry and physical chemistry.
Image source: Svante Arrhenius
1897
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Thomson's identification of the electron revealed that atoms have internal structure, launching the study of subatomic particles and eventually quantum theories of bonding.
Image source: J. J. Thomson
1898
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Marie and Pierre Curie isolated two new radioactive elements from pitchblende. Marie Curie's pioneering radiochemistry earned her Nobel Prizes in both physics and chemistry.
Image source: Marie Curie
1909
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Haber's catalytic synthesis of ammonia from nitrogen and hydrogen enabled large-scale fertilizer production, feeding billions, though it was also used for explosives during wartime.
Image source: Haber process
1916
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Lewis described covalent bonding as shared pairs of electrons between atoms, giving chemists a powerful visual model for molecular structure and reactivity.
Image source: Gilbert N. Lewis
1935
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Carothers at DuPont created nylon, the first fully synthetic fiber, ushering in the age of polymer science and synthetic materials that transformed everyday life.
Image source: Nylon
Dec 1938
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Hahn and Fritz Strassmann split uranium nuclei, and Meitner explained the process as fission, opening the era of nuclear energy and profoundly altering science and geopolitics.
Image source: Nuclear fission
Apr 1953
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Building on Rosalind Franklin's X-ray data, Watson and Crick revealed DNA's double helix, merging chemistry with biology and launching molecular biology and biotechnology.
Image source: Nucleic acid double helix
1985
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Harry Kroto, Richard Smalley, and Robert Curl discovered C60 buckminsterfullerene, a soccer-ball-shaped carbon molecule, opening new frontiers in nanotechnology and materials chemistry.
Image source: Fullerene
Or browse the full history timeline directory, with more than 2,000 topics.
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