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400 B.C. - proposed the concept of the atom
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Influential in the rejection of the concept of the atom
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He recognized and named oxygen (1778) and hydrogen (1783) and opposed the phlogiston theory.
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He was the 1st person to introduce the use of chlorine as bleach
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He discovered that all matter is composed of extremely small particles called atoms.
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He was best known for his discovery of the law of constant composition, stating that chemical compounds always combine in constant proportions
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He is best known for his hypothesis that equal volumes of different gases contain an equal number of molecules, provided they are at the same temperature and pressure.
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He made the observation that invisible rays just beyond the violet end of the visible spectrum were especially effective at lightening silver chloride-soaked paper.
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He proved that electricity transforms chemicals.
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Dsicovered caffiene
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Discovered the Cathode Ray. Radiation going threw tubes
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Invented the Quantum theory
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Dsicovered Radium and Polonium
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Made the 1st peridoic table of elements https://www.youtube.com/watch?v=Zg6KeXsDVwY
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Developed teh 1st artificial sweetner
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Created the 1st ever vaccine
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He proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another.
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Discovered the Neutron
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He was using naturally fluorescent minerals to study the properties of x-rays
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He 1st discoered radioactivity
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He mad discoveries in the fields of radioactivity and nuclear physics. He discovered alpha and beta rays, set forth the laws of radioactive decay, and identified alpha particles as helium nuclei.
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Discovered the electron
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Developed the 1st plastic
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Measured the single charge of an electron
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He found that certain lines in the X-ray spectrum of each element moved the same amount each time you increased the atomic number by 1.
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Created the theory of relavtivity
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discovered a way to formulate quantum mechanics in terms of matrices.
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He combined the equations for the behavior of waves with the de Broglie equation to generate a mathematical model for the distribution of electrons in an atom.
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He invented Penicillin
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Discovered the wave nature of Electrons
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Discovered nylon
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Discovered the the structure of insulin
