WEB QUEST Chapter 4

Use the listed sites to answer the following questions.

http://pearl1.nanl.gov/periodic

http://www.webelements.com/index.html

http://www.chem.calelements.com/

1. What is the melting point, boiling point, number of naturally occurring isotopes,

means of commercial production, and a common use for the elements

Li, Mg, Al, Si, P, S, Cl, and Ar?

2. Use http://www.rso.utah.edu/teacher/radfund/ to describe alpha particles, beta particles, and gamma rays.

3. The site http://www.express-data.com/ has excerpts from the original publication of J.J. Thomson. Read the sections “Early History”, “Dalton”, J.J. Thomson”, and “Thomson Model”. What did he call electrons, and how was his theory accepted by other noted scientists of the time?

4. The site http://www.nmsi.ac.uk/on-line/electron/section3/1911a.html has quicktime movies showing the early electron experiments. Watch the section “Discovery”.

5. The site http://prin.chem.tntech.edu/chem/chem101/chapt3b/start.html has a 20-question quiz on atomic structure and isotopes. Check your progress.