-
Joseph Priestley discover oxygen by producing oxygen in experiments. Antoine Lavoisier then names oxygen and describes the role in combustion . Priestley didn’t now the importance of his discovery
-
Humphrey Davy used an electric pile to separate salt. This reaction is called electrolysis which is the process of electricity changing chemicals.
-
John Dalton discovered his theory that elements consist of tiny particles called atom. This provides a way to link atoms to measure volume of a gas and mass of a solid.
-
Amedeo Avogadro finds out the molecules are made up of atoms.
-
Friedrich Woehler Made urea from inorganic molecules. This proves that living things can be made from nonliving substances.
-
Friedrich Kekule finds out the chemical structure of benzene and carbon-carbon bonds
-
Gustav Kirchhoff and Robert Bunsen discovered that elements absorb or reflect wavelengths, producing specific spectra.
-
Dmitry Mendeleyev found an order that works for organizing the elements. This helped him predict elements that had not been discovered.
-
John Wesley Hyatt made celluloid plastic. Leo Baekeland Invented hardened plastic
-
J.J. Thomson discovered that the negatively charged particles, given off of a cathode ray tube, are a part of atoms. This is now known as electrons
-
Marie and Pierre Curie found and isolated radioactive materials. They found radioactivity by extracting uranium from uranium ore.
Marie notes that the residual material was more reactive -
Niels Bohr discovered that electrons travel in specific orbits. He also found out the chemical properties are dependent of the amount of electron in the outer orbit
-
Robert Curl, Harold Kroto and Rick Smalley discover a cage like carbon compound. It was names after Richard Buckminster Fuller because of his geodesic domes
