1. Born in October 20,1891- July 24, 1974 By Alexandra Cardona, Caroline Garretson and Hannah Dela Cruz

2.  Born in Cheshire England  1908 graduated Manchester University  1913 was a prisoner of war for 4 years during WWI in Germany  1919 researched in Cambridge University’s nuclear physics lab  He married Aileen Stewart Brown from Liverpool in 1925.  James had two twin daughters.  Live at Denbigh, North Wales  Chadwick hobbies include fishing and gardening

3.  Using a sample of Beryllium bombarded with alpha particles caused it to emit mysterious radiation in using magnetic field, which bounced off wax and were sent to a detecting chamber in which he later discovered the radiations were neutral.  He discovered the charges were neutral when radiation that was released hit wax and was sent into a detecting chamber. This detected the neutral charges that were given off.

4.  In 1932 Chadwick discovered neutrons  A neutron is the neutral charged particles in an atom found in the nucleus.  Mass nearly 1,840 times of an electron.  Neutron consist of 3 quarks like other protons - A quark is a particle which is only found in other particles  Neutrons are important in forming a chain reaction in nuclear fission, as used in nuclear reactors and atom bombs.

5. http://www.dnatube.com/video/3365/ James-Chadwick-and-the-neutron

6.  http://www.thocp.net/biographies/chadwick_ja mes.htm http://www.thocp.net/biographies/chadwick_ja mes.htm  http://www.nobelprize.org/nobel_prizes/physic s/laureates/1935/chadwick-bio.html http://www.nobelprize.org/nobel_prizes/physic s/laureates/1935/chadwick-bio.html  http://www.dnatube.com/video/3365/James- Chadwick-and-the-neutron http://www.dnatube.com/video/3365/James- Chadwick-and-the-neutron  http://www.historyoftheuniverse.com/neutron.h tml http://www.historyoftheuniverse.com/neutron.h tml  http://www.historyoftheuniverse.com/quark.ht ml http://www.historyoftheuniverse.com/quark.ht ml