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Atomic Theory
John Dalton, being someone full of passion towards chemistry, contributed to the theory known as "Atomic Theory" and also gave meaning to the phrase "atomic mass". -
Oxygen
Joseph Priestly and Antoine Lev. were some of the first chemists to "search for new 'airs' ", and through intense research discovered the element Oxygen -
Synthesis of Urea
Friedrich Wöhler had discovered that organic and inorganic compounds were very much alike and somewhat compatible. This was after he investigated some crystals that had formed in a mixture of inorganic compounds, and he realized they were same crystals he had previously seen in urine (a form of waste created by living organisms such as humans or animals) -
Electricity transforms chemicals
Humphrey Davy discovered that when passing an electrical current through a soup of melted pot ash, it almost immediately turned into Potassium, due to the electricity rearranging the molecular structure of the existing "pot ash soup" -
Atoms have signatures of light
Robert Bunsen and Gustof Kerchief had discovered how different chemicals produced unique light patterns when burned and letting the light pass thru=ough a prism and parts of a telescope (also debuting the first electroscope) -
Periodic table of elements
Dmitri Mendeleev had gotten inspired to put the known elements in a specific order while writing a textbook for his students. He arranged them accordingly to similarities in their properties and relative atomic mass. He even was able to predict that leaving blank spaces for elements that hadn't been discovered yet. -
Radioactivity
Antoine Henri Bequerd was able to capture Uranium's radioactivity on pictures. He also was able to give names to the different waves and particles of radioactive decay such as Alpha Particles, Beta Particles and Gamma rays. -
Atoms combine into molecules
Joseph Gay-Lussoc had conducted studies and experiments to further research Dalton's discoveries, with the aid of Amadeo Avagardo -
The electron
Joseph Thomson discovered the electron when conducting an experiment using what is known as an electrode tube. -
Chemical Structure
German chemist August Kekule one day had an epiphany to create a system for visualizing the chemical structure of various molecules. -
Sources
Source #1.) Youtube; https://www.youtube.com/watch?v=oSBM2SXlGCk&t=1989s
Source #2.) https://www.google.com
