Developing Science - Year 9

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Atoms

Atoms are the basic units of matter and the defining structure of elements. The term "atom" comes from the Greek word for indivisible, because it was once thought that atoms were the smallest things in the universe and could not be divided. We now know that atoms are made up of three particles: protons, neutrons and electrons — which are composed of even smaller particles such as quarks.

'What is an atom?' 2017, Live Science

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CSIRO Image Library
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eBooks

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Britannica Stax

Issues in Society

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Reference resources

On the shelves

General Encyclopedia

  • World Book Encyclopedia

Subject Encyclopedia

CSIRO Image Library

The CSIRO Science Image Library has an extensive selection of images you can use in your assignments. They are available to download and copy under a Creative Commons licence. You must acknowledge and provide a citation to the CSIRO when you use any of these images.

Web Resources

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CERN

J. Robert Oppenheimer

Manhattan Project