Thomson And The Gold Foil Essay

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Back in the eighteenth/nineteenth hundreds, four chemists had done research to help us better understand the structure of an atom. One chemist was J.J. Thomson who discovered electron atoms. He did this by using a cathode ray scope and found small amounts of negatively charged particles. According to abyss.voregon.edu Thomson use of a cathode was a great step to determine that all matter whatever its source contains some type of particles. He did another experiment also with a cathode ray that lead him to conclude the electrons carry electricity. In nineteen- eleven, Ernest Rutherford discovered alpha particles and the nuclear structures of an atom. Alpha particles are identified as helium nuclei. He said that there is a positive charge inside atoms, known as protons. However he knew that an atom is consisted of protons and electrons but didn't know how they were arranged. But he soon found out. He worked with Thomson on an experiment called the gold foil. The gold foil is an experiment …show more content…

She used artificial radioactivity that knocked out neutrons from beryllium atoms Also she did an experiment that used gamma rays which ejected protons from wax. She saw that there was something coming from the nucleus but didn't know what it was specifically.However someone else used her research to help discover something another subatomic particle. Her research helped James Chadwick to discover the neutron in nineteen thirty-two. He believed that particles with no charge was a nucleus however there was no proof. This happened because he believed that there were electrons located in the nucleus but could also be outside the nucleus. Then he found out that neutrons have zero charge and are not deflected by electric or magnetic fields.Lastly he used a gamma ray like Curie to see if protons ejected from wax but found out that the particle he was looking for was the neutron that hit the proton

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