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The Proficience and Advancement of Learning
Sir Francis Bacon published "The Proficience and Advancement of Learning" which included a description of what would later be known as the scientific method. -
The Sceptical Chymist
Robert Boyle published "The Sceptical Chymist". It contained some of the earliest ideas of atoms, molecules, and chemical reaction. -
Phosphorus Disovered
A german alchemeist named Hennig Brand discovered the element Phosphorus -
Helium Isoloated
Helium was isolated by Sir William Ramsay and independently by N. A. Langley and P. T. Cleve in London. -
Isolation of CO2
Joseph Black, a chemist, isolated Carbon Dioxide who then called it "fixed air". -
Magnesium Discovered
Magnesium was discovered by Joseph Black, in England -
Hydrogen Discovered
Hydrogen was discovered by English chemist and physicist Henry Cavendish. -
Hydrogen being colourless
Henry Cavendish discovered hydrogen as a colorless, odourless gas that burns and can form an explosive mixture with air -
Nitrogen Discovered
Nitrogen was discovered by Scottish chemist Daniel Rutherford. -
Period: to
Isolation of Oxygen
Carl Wilhelm Scheele and Joseph Priestly independently isolated oxygen -
Chlorine Discovered
Chlorine was discovered by a Swedish scientist, Carl Willam Scheele. -
First List of Elements
Antoine Lavoisier wrote the first extensive list of elements containing 33 elements & distinguished between metals and non-metals -
Berylium Discovered
Beryllium was discovered by French chemist Louis-Nicolas Vauquelin. -
Daltons Law
John Dalton proposed "Dalton's Law" describing the relationship between the components in a mixture of gases. -
Sodium Discovered
Sodium was discovered by English chemist Sir Humphry Davy. -
Boron Discovered
Boron was first discovered by Sir Humphrey Davy, Joseph-Louis Gay-Lussac and Louis Jacques Thênard. -
Magnesium Isolated
Magnesium was isolated by A. A. B. Bussy and Sir Humphrey Davy. -
Elements Discovered
47 elements were discovered, and scientists began to see patterns in the characteristics. -
Lithium Discovered
Lithium was discovered by Swedish chemist known as Johan August Arfwedson. -
Aluminium Discovered
Aluminium was discovered by Danish chemist and physicist Hans Christian Oersted. -
Introduction of Letters and Symbols
Jakob Berzelius developed a table of atomic weights & introduced letters to symbolize elements -
Grouping of Elements
English chemist John Newlands divided the discovered 56 elements into 11 groups based on simlarities. -
Periodic Table in Atomic Weights
Dmitri Mendeleev produced a table based on atomic weights but arranged 'periodically' with elements with similar properties under each other. His Periodic Table included the 66 known elements organized by atomic weights. -
Helium Discovered
In 1868 a French astronomer, Pierre Janssen in 1868 found proof of helium in the Sun. -
Fluorine Discovered
Fluorine was discovered by French chemist Henri Moissan. -
Noble Gasses Discovered
William Ramsay discovered the Noble Gasses -
Electrons Negative Charge
English physicist discovered that electrons had a small nageative charge in an atom. Later on John Townsend and Robert Millikan determined their exact charge and mass. -
Neon Discovered
Neon was discovered by Sir William Ramsay, a Scottish chemist, and Morris M. Travers, an English chemist. -
Radioactivity Discovered
Ernest Rutherford discovered the source of radioactivity as decaying atoms -
Orbiting Electrons
Rutherford and German physicist Hans Geiger discovered that electrons orbit the nucleus of an atom. -
Movement of Electrons
Niels Bohr discovered that electrons move around a nucleus in discrete energy called orbitals. -
Protons in the Nucleus
Ernest Rutherford first discovered that the nucleus of an atom contained protons. -
Neutrons and Isotopes
James Chadwick first discovered neutrons isotopes. -
Lanthanides and Actinide
Glenn Seaborg identified lanthanides and actinide
