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Practice What You Are Learning

This section will contain practice problems for various topics in chemistry. I will focus on the types of problems that seem to be causing the greatest difficulty.

Problem of the Week

These problems are more difficult than the ones discussed in class. They are meant to be a challenge. There will be a 5 point bonus to the first person who correctly answers the problem before deadline listed with each question. The answer must be presented in class in order to receive the bonus.

1. Problem of the Week for February 12: Dimensional Analysis
2. Problem of the Week for February 19: Composition
3. Problem of the Week for February 26: Formulas
4. Problem of the Week for March 4: None. Do your Web search!
5. Problem of the Week for March 11: Formulas and Lewis Structures
6. Problem of the Week for March 18: Balancing Equations

Superscripts

Superscripts will be indicated with the ^ symbol. For instance, four times ten to the third power would be written: 4 x 10^3. Calcium ion would be Ca^2+, where the 2+ indicates the charge.

Subscripts

Subscripts will be implied. For instance, aluminum carbonate would be written: Al2(CO3)3. A sulfate ion would be SO4^2-. This is a little confusing but if we are consistent, it will work.

Reaction arrows

Use three dashes and the greater than symbol to indicate a reaction: --->

Various Science Pages

UC Berkeley Chemistry Site

This site contains a tremendous amount of information in the field of chemistry. It also contains many links to other sites.

WebElements

The Periodic Table On-Line. This is one of the best periodic tables available on the Web. There is basic information and extensive data about each element. This link is to the beta test version of WebElements 2.0. This version has separate tables for such things as general, chemical, biological and geological data.

American Chemical Society

This is the home page for the American Chemical Society. There is a wide variety of chemistry related information at this site.

National Science Foundation (NSF)

The National Science Foundation's mission is to support science research, education and development throughout the country. Much of the site is dedicated to providing information about research grants. There is also a wealth of information about current research and NSF funded projects.