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Question Set: Melting and Boiling Points

  1. Why are boiling and melting points both listed as the header of the same column of Table 5-1?  
  2. What generalizations can you make about the elements and compounds in Table 5-1?  For instance:  do all gases, liquids, and solids have similar melting and boiling points?
  3. Why do you think carbon has the highest melting and boiling points in Table 5-1?  Why does hydrogen have the least?
  4. Why does sodium chloride have a high melting temp, yet dissolve easily in water?
  5. Why is the atmosphere composed mostly O2 and N2  (which has a melting point of -210°C and boiling point of -196°C), not water?
Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.