• Sulfur exists in a greater variety of allotropes than any other element. The most common is the alpha, or orthorhombic form. This form is yellow and the form that other allotropic forms of sulfur will revert to at room temperature. The alpha allotrope has a melting point of 112.8 C. However, microcrystal of the alpha-form may melt as high as 115.1 C. Due to the polymeric nature of sulfur as it melts it is difficult to define a specific temperature as its normal melting point. The beta allotrope, which has a monoclinic structure, has a melting point which generally stated as 119 C. However, microcrystal of the beta form melt as high as 120.4 C. A gamma allotropic form also exists, but its melting point is not well defined.

  • Mr. James Graham, a teaching assistant for our theory section will give a seminar on Thursday, September 4th, at 3:30 p.m. in PS103. James will be discussing his doctoral research project which will be interesting to chemical engineers as well as chemists. Get it on your schedule now!

  • In your answers to PS1.1 I would like you to write down the reference(s) where you found your data.

  • Here is a site that contains brief discussions on significant figures and dimensional analysis. I've read the two and agree with the way they are presented here. We'll talk about both of these topics on Wednesday.

  • This year celebrates 100 years since the discovery of the electron (WOW!!). Check out this site to learn way cool stuff about the electron.

  • Here is a way cool Periodic Table. You can see the reaction of sodium with water and the reaction of potassium with water from this site. I know we have not talked about the Periodic Table yet, but who cares!

  • Here is a site which will convert units for you. (NOTE: You will not be able to use this site during an examination!)

  • Monday, September 8th, is the last to drop a course with no grade and no fee payment. Student will still be able to add a class between, Wednesday, September 3rd and Monday, September 8th with the instructor's permission.


    • Important links for CHEM 1314