Science
Mission Objectives
Name some of the scientists who worked on models of the atom and place them in chronological order
Describe earlier models of the structure of the atom
Explain the results of the alpha scattering experiment and how this was used to deduce a new model of the atom
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Words and meanings to learn
Democritus
an Ancient Greek philosopher primarily remembered today for suggesting the existence of atoms
John Dalton
an English chemist, physicist and meteorologist, best known for introducing the atomic theory into chemistry
J.J. Thomson
Sir Joseph John Thomson; a British physicist and Nobel laureate in physics who was credited with the discovery of the electron, the first subatomic particle to be discovered
cathode
the negatively charged electrode by which electrons enter an electrical device
Ernest Rutherford
the scientist who discovered the atomic nucleus with his gold foil experiment
Resources: Class presentation and handout.
Handout: Describe the history of the atom in chronological order. Summarise the alpha scattering experiment and explain the evidence for atomic structure. Describe the contributions of Bohr and Chadwick. The last question extends knowledge as a challenge question.
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