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Atoms – The Inside Story

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Atoms – The Inside Story

  1. 1. Atoms – The Inside Story<br />Class NotesTuesday, Sept. 14, 2010<br />
  2. 2. What are atoms?<br />Smallest ‘building blocks’ of matter<br />Matter is anything that has mass and takes up space<br />Most mass in an atom is contained in the middle, called the nucleus<br />Atoms are composed of 3 different parts:<br />Protons (+)<br />Neutrons (0)<br />Electrons (-)<br />
  3. 3. Where are these particles found in the atom?<br />Different theories and atomic models have been tested by many scientists over hundreds of years, but we now think:<br />Protons are found in the nucleus<br />Neutrons are found in the nucleus<br />Electrons are probably found moving around in an area surrounding the nucleus, called the electron cloud<br />
  4. 4. Atom Concept Map<br />

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