Scientists Project Chem

Democritius

460

Was born around 460 BCE lived until around 370 BCE. first to suggest the idea that atoms exist. His ideas of atoms would later lead to the large advancemetns in the field.

Benjamin Franklin

Oct 27, 1706

lived from1706 to 1790. he was the first to suggest how to find the size of an atom.

Anitone Lavoiser

Oct 26, 1743

lived from 1743 to 1794. helped to establish the law of conservation of mass. he burnt phosphorus and asulfur in air and proved that the products weighed more than his original.the weight gained was from the air.

Joseph Lewis Poust

Oct 26, 1794

lived from 1754 to 1826. he waas able to give results of his chemical analyses in terms of percent weights.

John Dalton

Oct 26, 1803

lived from 1766 to 1844. he discover atomic theory as a result of rescreach with gases. certian gases only could be combined in certain proportions even if two different compounds share common element or group elements. his discovery helped to find the stuturce of an atom.

Michael Faraday

Oct 27, 1832

lived from 1791to 1867. studied the effect of electricty on solutions. he developed the laws of electrolysis.

Eugene Goldstein

Oct 27, 1850

lived from 1850 to 1930 he was a discoverer of the discharge tube and anode rays . first to veiw the proton. contribute to function of the atom.

Albert Einstein

Oct 28, 1879

lived from 1879 to 1955 responsible for the equation E=mc 2

J.J. thompson

Oct 27, 1897

lived from 1856 to 1940. in 1897 he discovered the electron. came up with the theory, that atom was a makep of small particles. theory was proven true do to help from the cathode ray tube.

Max Planck

Oct 27, 1900

lived from 1858 to 1947. to explain hot glowing matter he used the idea of quanta.

Robert A Millikan

Oct 26, 1910

lived 1868 to 1953. discovered the accurate charge of an electron.

Ernest Rutherford

Oct 28, 1911

lived from 1871 to 1937. established that the nucleus was small and postivly charged . also first to think that electrons were outside of the nucleus.

Niels Bohr

Oct 28, 1922

lived from 1885 to 1962. created and developed the bohr model. which helped to find the structure of the atom.

Lewis De Broglie

Oct 27, 1923

lived 1892 to 1987 . discoverd that electtrons had a dual nature. similar to both particals and waves. helped to find the structure of the atom.

Arthur Compton

Oct 28, 1923

lived from 1892 to 1962. colined the term photon. and was awarded the noble peace prize for his compton effect.

Fredrich Hund

Oct 28, 1925

lived from 1896 to 1997 . created the hund mulkliken theory stating each sublevel must have one electon before it doubles. helped find the structure of the atom.

Werner Heisenberg

Oct 28, 1925

lived from 1901 to 1976. created the theory of quantum mechanics. helped to discover the structure of the atom

Erwin Schrodinger

Oct 27, 1926

lived from 1887 to 1961 created the quantum mechanical model of the atom.used mathamatical equations to explain the liklihood to finding the postion of an electron.

Max Born

Oct 28, 1926

lived from1882 to 1970 . developed the term quantum mechanics. help to find the structure of the atom

C.J Davisson and L.H Germer

Oct 27, 1927

cj lived from 1881 to 1958 and lh lived from 1896 to 1971. their experiment demonstrated the wave particle duality that was advanced by lewis de broglie. helped to find the struture of the atom.

Wolfgang Pauli

Oct 28, 1928

lived from 1900 to 1958. helped to discover the quantum field theory. helped to find the structure of the atom.

James Chadwick

Oct 27, 1932

llived from 1891 to 1974 1932, he discoverd the neutron he called it a neutron because of its lack of electric charge., helped to discover the function of the atom.

Aristotle

Mar 2, 2022

lived from 384 to 322 B.C.E.