Contributors to Chemistry

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Robert Boyle

1659 - 1662

Boyle published his work and stated Boyle's Law in 1662 and was the first scientist to preform and present true quantitative experiments.

Antoine Lavoisier

1771 - 1772

In the summer and all of 1771 Antoine contributed a lot of new information to the phenomenon of combustion

Joseph Priestley

1774 - 1779

Discovered sulphur dioxide and oxygen gas

Carl Scheele

1774 - 1781

Discovered many new chemical elements such as: barium, manganese, molybdenum, tungsten, and phosphorus. Also discovered new compounds: citric acid, lactic acid, glycerol, hydrogen cyanide, hydrogen fluoride, and hydrogen sulphide

Joseph Proust

1798 - 1799

Proust’s largest accomplishment into the realm of science was disproving Berthollet with the law of definite proportions, which is sometimes also known as Proust's Law

John Dalton

1807 - 1808

Dalton's Atomic Theory:

  1. All matter is composed of extremely small particles called atoms, which cannot be broken into smaller particles, created, or destryed
  2. The atoms of any given element are all identical and different from the atoms of other elements
  3. Atoms of different elements combine in specific ratios to form compounds
  4. In a chemical reaction, atoms are separated, rearranged, and recombined to form new compounds

Julius Plücker

1859 - 1879

Worked and added great amounts of new knowledge to how electricity passes through matter

William Crookes

1875 - 1878

Crookes invented the radiometer in 1875 and, beginning in 1878, investigated electrical discharges through highly evacuated "Crookes tubes." These studies laid the foundation for J. J. Thomson's research in the late 1890s concerning discharge-tube phenomena.

J.J. Thomson

1897 - 1898

Modified Crookes' tubes and found that the rays inside the tube had a negative charge.

Marie + Pierre Curie

1897 - 1901

Discovered an isolated radioactive elements like uranium, radium, and polonium

Frederick Soddy

1898 - 1900

Worked with Rutherford to understand and prove that the reason for the odd behavior of radioactive elements was because they decayed into other elements and created alpha, beta, and gamma radiation

Jean Baptiste Perrin

1905 - 1926

Began research after Einstein published in 1905 and won the Nobel prize in 1926 for his definite proof of the structure of matter

Ernest Marsden

1908 - 1909

Experiment that bombarded gold atoms with alpha-particles lead to Rutherford discovery of the nucleus

Ernest Rutherford

1908 - 1909

Won the Nobel Prize in 1908 for his discovery of the nucleus

Robert Milikan

1908 - 1909

Preformed oil-drop experiment and determined the charge and mass of a single electron

Hans Geiger

1910 - 1911

Co-inventor of the Geiger counter

James Chadwick

1928 - 1929

Discovered the neutron, accounting for most of the mass in an atom