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Oxygen
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 -
Electricity Transformes Chemicals
Humphrey Davy used an electric pile to separate salt. This reaction is called electrolysis which is the process of electricity changing chemicals. -
Atomic Theory
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. -
Atoms Combine into Molecules
Amedeo Avogadro finds out the molecules are made up of atoms. -
Synthesis of Urea
Friedrich Woehler Made urea from inorganic molecules. This proves that living things can be made from nonliving substances. -
Chemical Structure
Friedrich Kekule finds out the chemical structure of benzene and carbon-carbon bonds -
Atoms Have Signatures of Light
Gustav Kirchhoff and Robert Bunsen discovered that elements absorb or reflect wavelengths, producing specific spectra. -
Periodic Table of Elements
Dmitry Mendeleyev found an order that works for organizing the elements. This helped him predict elements that had not been discovered. -
Plastics
John Wesley Hyatt made celluloid plastic. Leo Baekeland Invented hardened plastic -
The Electron
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 -
Radioactivity
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 -
Electrons for a Chemical Bonds
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 -
Fullerenes
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
