Lecture15222

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Lecture15222

  1. 1. Liquid and Solid States: the Uniqueness of Water Lecture 15
  2. 2. The principal substance
  3. 5. Water on Mars
  4. 6. Colors are traditional
  5. 7. Colors are traditional
  6. 8. H 2 O as a source of inspiration
  7. 9. H 2 O as a source of inspiration
  8. 10. In what the uniqueness? <ul><li>great solvent properties due to polarity and hydrogen bonding ability; </li></ul><ul><li>exceptional high specific heat capacity; </li></ul><ul><li>high surface tension and capillarity; </li></ul><ul><li>density differences of liquid and solid states. </li></ul>
  9. 11. Bent molecular shape
  10. 12. Unique solvent properties of water result from its polarity and exceptional H-bonding ability.
  11. 13. Unique thermal properties of water result from its exceptionally high specific heat capacity and heat of vaporization.
  12. 14. Hydrogen bonds in oceans
  13. 15. Unique surface properties of water are high surface tension and high capillarity. These result from abundant H-bonds.
  14. 16. Capillary action of water
  15. 17. Density differences of liquid and solid states of water result from large spaces within ice.
  16. 18. Ice is lighter
  17. 19. Snow crystals
  18. 20. Snow crystals
  19. 21. THE END

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