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Fraser

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Submitted By Frazzle20
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How has the model of the structure of the atom changed over time?
The idea of an atom was first conceived by the ancient philosophers of Greece. In the fifth century BC, Leucippus and his student Democritus suggested that there were small indivisible particles, which he called atoms – from the Greek atomos meaning ‘uncuttable’.

This idea of atoms has been built on by many other scientists over hundreds of years. These scientists have drawn conclusions from a variety of different experiments. Some conclusions have been arrived at when scientists were researching other questions, and some ideas have been proven by designing a specific experiment.

A model of the structure of the atom is still evolving today. Particle physicists are working at particle accelerators like CERN, on newly discovered quarks.

In this task you will be researching one of the models to have been developed over the years to describe the structure of an atom.
Task
Your task is to produce a report into one of the different models of the atom that has been developed by scientists since 1890.

Your research should be done online, using the web links provided below as well as any other credible sources you feel would be useful.

Your report will be a written report and should include images and, where appropriate, diagrams of the experiments conducted.

Your report should include: * Information about the key scientists who developed this model of the atom * A description of what they believed the atom looked like when they began their work * The key experiments that they did and what they found out from them * The conclusions that they drew from their work and the model of the atom that developed from their work * Information about when their ideas were suggested. The different models of the atom that you can choose from are: * the plum pudding model of an

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