Chemistry Jobs in the USA
Site helps employers find the chemists, chemical engineers, life scientists and polymer scientists they need. Helps job candidates examine a wide variety of positions. Registration is free to job seekers.
http://www.chemistryjobcenter.com

Chemistry Jobs in the UK
Jobs.ac.uk have a large number of science, research, academic and other vacancies in the UK and overseas. This includes many chemistry vacancies and other physical sciences jobs, including materials science, physics, etc.
http://www.jobs.ac.uk/categories/chemistry

Organic Chemistry Practice Problems
This absolutely beautiful introduction to organic chemistry by Bill Reusch at Michigan State University is a MUST SEE, MUST DO. It includes very well organized discussions, quizzes, and visualizations of all of the important topics in introductory organic chemistry.
http://www.cem.msu.edu/~reusch/VirtTxtJml/Questions/problems.htm

ChemJobs.net
This site is the web's leading job vacancy site for chemists, biochemists, pharmaceutical scientists and chemical engineers covering Europe, Canada, the U.S., & the rest of the world.
http://www.chemjobs.net/chemjobs.html

Chemistry Jobs in Germany
Part of the Chemie.DE Information Service, this site provides regularly updated vacancy information about jobs in chemistry for Germany; the site is in the German language.
http://www.chemiekarriere.net/

Printable Periodic Table
Color, black and white version of the periodic table is prepared for prints in PostScript (PS) and Portable Document Format (PDF). The atomic weights of the elements are rounded to 5 significant figures.
http://www.ktf-split.hr/periodni/en/pse-pdf.html

Jobs for Organic Chemists
This section of www.organicworldwide.net is the on-line resource for organic chemists looking for a job, or for companies or organizations who want to recruit organic chemists.
http://www.organicworldwide.net/jobs/

Chemical Elements
An online, interactive periodic table created by Yinon Bentor. Entries include basic information, atomic structure, isotopes, facts, and related links.
http://www.chemicalelements.com

IUPAC Nomenclature
The HTML reproduction of the IUPAC Nomenclature of Organic Chemistry. You can search the database or choose a subject for recommendations on the proper naming of organic compounds.
http://www.acdlabs.com/iupac/nomenclature/

Chemseer
The site is primarily designed to aid chemists in their search for employment, listing a variety of chemistry, pharmaceutical and biochemistry jobs in the academic and industrial fields. Also included are a number of valuable resource tools for chemists, including links to online chemistry and chemistry-related journals, links to some chemistry-related companies and to UK academic establishments.
http://www.chemseer.com/