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From Chapter 2 & 3; Chemistry for Changing Times Hill, McCreary, and Kolb

(Antoine) Lavoisier

Created the Law of Conservation of Matter

(Joseph) Proust

Created the Law of Definite Proportions

(John) Dalton

Organized the Atomic Theory and the Law of Multiple Proportions

(Alessandro) Volta

Invented the battery, in 1800 an Italian built the first battery, a device that provided a steady current of electricity.

(Humphry) Davy

Passed electrical current through substances to decompose them. Isolated the elements Potassium, Magnesium, Strontium, Barium, and Calcium

(Michael) Faraday

Davy's protege, defined elctrolysis, electrolyte, electrodes, anode, cathode, ion, anion, and cation

(William) Crookes

Discovered Cathode Rays by charging the air inside a glass tube and finding green particles

(J.J.) Thomson

Performed cathode ray tube experiment and discovered electrons

(Eugen) Goldstein

Discovered the proton, particles traveling in the opposite direction of the electrons in a cathode ray tube.

(Robert) Millikan

Performed the oil drop experiment in order to determine the mass and charge of electrons

(Wilhelm Conrad) Rotengen

Discovered the x-ray and x-rayed hand

(Antoine) Becquerel

Discovered that uranium salts emitted rays that produced an image on a photographic plate.

(James) Chadwick

Performed high energy experiments that discovered neutrons

(Marie Sklodowska) Curie

A graduate student of Becquerel's. Coined the term Radioactivity. Worked with husband, Pierre, in isolating Polonium and Radium.

(Ernest) Rutherford

Defined alpha, beta, and gamma rays. Gold foil experiment proves there is a dense, positively charged nucleus

(Niels) Bohr

Created the planetary model of the atom

(Louis) de Broglie

Hypothesized that matter behaves like a wave, and developed an equation to calculate the wavelength of every object

(Erwin) Schrodinger

Gave rise to the Quantum Mechanical Model with his calculations of the probability of where an electron could be found at a around an atom at a given time.

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