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1.) All matter is composed of indivisible particles called atoms.
2.) All atoms of a given element are identical; atoms of different elements have different properties.
3.) Chemical reactions involve the combination of atoms, not the destruction of atoms. Atoms cannot be destroyed.
4.) When elements react to form compounds, they react in defined, whole-number ratios.
James Chadwick explained that a neutron is a component of an atom that has a neutral charge but it is not comprised of protons or neutrons. A neutron also has a similar mass to a proton.
By:Steven Leon
In 1911, Ernest Rutherford discovered a positively charged mass in the center of the atom and named it the nucleus.
In 1930, James Chadwick worked with Beryllium radiation to discover the neutron.
John Dalton was born on September 6, 1766.
In 1803, John Dalton release his Atomic Theory.
Ernest Rutherford worked on his Gold Foil experiment in 1907.
James Chadwick was born on October 20, 1891.
In 1913, Niels Bohr finished his model of the atom and it was called the Bohr Model.
Robert Millikan died on December 19, 1953.
Ernest Rutherford died on October 18th, 1937.
Robert Millikan was born on March 22, 1868.
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Niels Bohr died on November 18, 1962.
In 1910, Robert Millikan worked on his Oil Drop experiment trying to find the charge of an electron.
James Chadwick died on July 24, 1974.
Joseph John Thomson issued his discovery of a negatively charged, the electron, on April 30, 1897.
Joseph John Thomson was born on December 18, 1856.
John Dalton died on July 24, 1844.
Niels Bohr was born on October 7, 1885.
On February 27, 1932, James Chadwick published his paper the Neutron explaining how he discovered the existence of the neutron.
Ernest Rutherford was born on August 30, 1871.
Joseph John Thomson died on August 30th, 1940.
What is a Neutron?
In 1894, Joseph John Thomson conducted his Cathode Ray Experiment.