Oxygen

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Oxygen

  1. 1. Oxygen Colin James
  2. 2. <ul><li>Atomic Number: 8 (Number of Protons) </li></ul><ul><li>Atomic Mass: 16 (The total mass of the protons, neutrons and electrons found in the atom.) </li></ul><ul><li>Oxygen is classified as a nonmetal or gas. </li></ul><ul><li>Oxygen was the standard measure of weight used to weigh other elements until it was replaced by carbon. </li></ul>Oxygen Facts
  3. 3. Basic Properties of Oxygen <ul><li>Oxygen is colorless. </li></ul><ul><li>Oxygen is very reactive in its elemental </li></ul><ul><ul><li>form. Its most common form is O₂. O 3 is another form of oxygen which is called ozone </li></ul></ul><ul><li>Approximately 70% of the human bodies mass is oxygen. </li></ul><ul><li>Oxygen is completely essential for human survival. </li></ul>
  4. 4. Basic Properties of Oxygen <ul><li>Melting Point: -219 degrees C </li></ul><ul><li>Boiling Point: -183 degrees C </li></ul><ul><li>4 different isotopes </li></ul><ul><li>Discovered by Joseph Priestly in 1774. </li></ul><ul><li>Electronegativity: 3.5 </li></ul><ul><li>Soluble in water. </li></ul>
  5. 5. Electronic Structure Electron Configuration (He)2s 2 2p 4
  6. 6. Oxygen in Food <ul><li>Food spoils as a result of oxygen reacting with the enzymes found in food. This is called oxidation. </li></ul><ul><li>Oxidation is the combination of a substance with oxygen </li></ul><ul><li>Enzymatic Browning (When an apple turns brown after sitting out) is caused by Oxygen. </li></ul>
  7. 7. Oxygen in Food <ul><li>Oxygen provides humans with over 90% of the needed nutritional energy. </li></ul><ul><li>The oxygen needed by the body is not absorbed from food. </li></ul>
  8. 8. Common Compounds Which Contain Oxygen <ul><li>H 2 O </li></ul><ul><li>C 6 H 12 O 6 Glucose </li></ul><ul><li>C 12 H 22 O 11 Sucrose </li></ul><ul><li>C 5 H 8 NNaO 4 H 2 O Monosodium Glutamate </li></ul><ul><li>Oxygen is found in most compounds which form food. </li></ul>
  9. 9. Bibliography (12/15/2003). Oxygen. Retrieved November 18, 2008, from Periodic Table of the Elements Web site: http://periodic.lanl.gov/elements/8.html Gagnon, Steve It's Elemental - The Element Oxygen. Retrieved November 18, 2008, from Jefferson Lab Web site: http://education.jlab.org/itselemental/ele008.html Pollock, Michael What is Oxidation. Retrieved November 18, 2008, from Wise Geek Web site: http://www.wisegeek.com/what-is-oxidation.htm

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