2.  Born: October 20 1891
 Died: July 24 1974

3.  Bollington, Cheshire, England

4.  Chadwick studied at the University of
Manchester and the University of
Cambridge
 Chadwick became professor of physics
at University of Liverpool in 1935

5.  He suggested that the new radiation
consisted of uncharged particles of
approximately the mass of the proton,
and he performed a series of
experiments verifying his suggestion.
These uncharged particles were called
neutrons, apparently from the Latin root
for neutral and the Greek ending -on

6.  James Chadwick hypothesized that
there were small particles with no
charge.
 He found called them neutrons, and said
they were at the dense compacted
center along with protons.
 He called this dense compacted center
a nucleus

7.  Cross C of E Primary School and the
Central Grammar School for Boys in
Manchester, and studied at the
universities of Manchester and
Cambridge.
 In 1913, Chadwick entered the Technical
University of Berlin, studying under Hans
Geiger and Sir Ernest Rutherford on an
1851 Research Fellowship.

8.  He discovered the neutron
 He also discovered the nucleus of the
atom

9.  Chadwick was in Germany at the start of
World War I, and he was detained in the
Ruhleben internment camp near Berlin
 He was knighted in 1945 for
achievements in physics
 he was awarded the Hughes Medal of
the Royal Society in 1932 and the Nobel
Prize in Physics in 1935

10.  We still believe the neutron is a particle in
an atom’s nucleus
 We still believe an atom has a nucleus

11.  James Chadwicks’ theory that electrons
rotate around the nucleus in defintie
pathes was disproven
 Electrons actually form a cloud around
the nucleus