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Chemistry, 7/e
Raymond Chang, Williams College
Nonmetallic Elements and Their Compounds

Internet Exercises

MicroWorlds
(http://www.lbl.gov/MicroWorlds/MaterialWorld/)

  1. Berkeley Lab's Advanced Light Source guides you through their research in MicroWorlds at the address, http://www.lbl.gov/MicroWorlds/MaterialWorld/. Study the material given about the two allotropes of carbon, diamond, and graphite, and answer the following:
    1. From examining the pictures of graphite and diamond, how do the two compounds differ in molecular structure?
    2. Explain why diamond is one of the hardest materials and graphite is soft.
http://www.cems.umn.edu/~aiche_ug/history/h_s_n2.html
(http://www.cems.umn.edu/~aiche_ug/history/h_s_n2.html)

  1. The University of Minnesota's Aiche Chapter discusses nitrogen and the compounds it forms. Learn more about this element at http://www.cems.umn.edu/~aiche_ug/history/h_s_n2.html.
    1. What is smog?
    2. Draw the lewis structures of the two ions produced when ammonia undergoes autoionization.
    3. What is produced when laughing gas decomposes?
http://www.shef.ac.uk/chemistry/web-elements/main/index-nofr.html
(http://www.shef.ac.uk/chemistry/web-elements/main/index-nofr.html)

  1. The site at http://www.shef.ac.uk/chemistry/web-elements/main/index-nofr.html is a periodic table that gives a lot of information about each element; in this case, the element is sulfur. After visiting this site, answer the following:
    1. How many isotopes of sulfur are known to exist?
    2. Name two sources of sulfur.
    3. How is sulfur commercially recovered?
    4. Is sulfur soluble in water? If not, then in what solvent is it soluble?
    5. Name three uses of sulfur.








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