atoms

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a show i did for a class

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atoms

  1. 1. About Atoms Explores club Ray Jackson 11/11/09
  2. 2. Atoms <ul><li>Basic building block of matter </li></ul><ul><li>The center of an atom is its nucleus </li></ul><ul><ul><li>The nucleus contains subatomic particles </li></ul></ul><ul><ul><ul><li>Positively charged protons </li></ul></ul></ul><ul><ul><ul><li>Uncharged neutrons </li></ul></ul></ul><ul><ul><li>The nucleus is surrounded by </li></ul></ul><ul><ul><ul><li>Negatively charged subatomic particles called electrons </li></ul></ul></ul>11/11/09
  3. 3. An Atom 11/11/09
  4. 4. Atoms <ul><li>Positively charged protons usually equal the number of negatively charged electrons </li></ul><ul><ul><li>Oppositely charged protons and electrons are attracted to each other </li></ul></ul><ul><ul><li>Exert a pulling force </li></ul></ul>+ - Proton Electron 11/11/09
  5. 5. Atoms and Chemical Elements <ul><li>Periodic Table of the Elements </li></ul><ul><ul><li>Shows 92 chemical elements of which 90 occur naturally in nature </li></ul></ul><ul><ul><li>The atomic number of each element is the number of protons in its nucleus </li></ul></ul><ul><ul><ul><li>Hydrogen—(atomic number 1) has 1 proton and 1 electron and no neutrons </li></ul></ul></ul><ul><ul><ul><li>Oxygen—(atomic number 8) has 8 protons and 8 electrons and 8 neutrons </li></ul></ul></ul>11/11/09
  6. 6. Hydrogen and Oxygen Atoms 11/11/09 Hydrogen Oxygen +P -E +P +P +P +P +P +P +P +P -E -E -E -E -E -E -E -E
  7. 7. Atoms and Molecules <ul><li>A molecule is the tiniest part of any substance and consists of one or more atoms </li></ul><ul><ul><li>Water molecule—2 hydrogen atoms and 1 oxygen atom </li></ul></ul><ul><ul><ul><li>The chemical formula for water is H 2 O </li></ul></ul></ul><ul><ul><li>Sugar molecule—12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms </li></ul></ul><ul><ul><ul><li>The chemical formula for sugar is C 12 H 22 O 11 </li></ul></ul></ul>11/11/09
  8. 8. Atoms and Energy <ul><li>An outside force upsets the balance between positively charged protons and negatively charged electrons generating an electrical charge or heat energy </li></ul><ul><ul><li>Electrical energy </li></ul></ul><ul><ul><li>Nuclear energy </li></ul></ul><ul><ul><li>Radiant energy </li></ul></ul>11/11/09
  9. 9. Sources <ul><li>“ What is Electricity,” U.S. DOE Energy Kid’s Page , http://www.eia.doe.gov/kids/energyfacts/sources/electricity.html (accessed May 15, 2006). </li></ul><ul><li>“ Nuclear Energy (Uranium) Energy from Atoms,” U.S. DOE Energy Kid’s Page , http://www.eia.doe.gov/kids/energyfacts/sources/non-renewable/nuclear.html (accessed May 15, 2006). </li></ul>11/11/09
  10. 10. Sources <ul><li>“ Atom,” Wikipedia , November 6, 2004, http://en.wikipedia.org/wiki/Atoms (accessed May 15, 2006). </li></ul><ul><li>“ All About Atoms,” Jefferson Lab , http://education.jlab.org/indexpages/index.html (accessed May 15, 2006). </li></ul>11/11/09
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