Updated Articles and Resources

By Anne Marie Helmenstine, Ph.D., About.com Guide since 2001

Color Change Chemistry Demonstration for Kids Created: Tuesday, May 21, 2013 Updated: Tuesday, May 21, 2013
Here's a color change chemistry demonstration safe enough for kids to perform. It uses household chemicals and is a snap to set up.
Chemistry Glossary Terms Starting with the Letter N Created: Friday, March 30, 2007 Updated: Monday, May 20, 2013
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter N.
Chemistry Glossary Terms Starting with the Letter D Created: Friday, March 30, 2007 Updated: Monday, May 20, 2013
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter D.
NA Number or DOT Number Definition Created: Monday, May 20, 2013 Updated: Monday, May 20, 2013
This is the definition of an NA number or DOT number.
Chemistry Glossary Terms Starting with the Letter U Created: Friday, March 30, 2007 Updated: Monday, May 20, 2013
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter U.
UN Number Definition Created: Monday, May 20, 2013 Updated: Monday, May 20, 2013
This is the definition of a UN number or UN ID.
High School Chemistry Demonstrations Created: Wednesday, May 15, 2013 Updated: Monday, May 20, 2013
High school science students are hard to impress! Here's a list of top chemistry demonstrations to capture student interest and illustrate chemistry concepts.
Genetic Code Created: Saturday, May 18, 2013 Updated: Saturday, May 18, 2013
This is a table of mRNA codons for amino acids and a description of the properties of the genetic code.
Transition Interval Definition Created: Friday, May 17, 2013 Updated: Friday, May 17, 2013
This is the definition for a transition interval, as used in chemistry.
Chemistry Glossary Terms Starting with the Letter T Created: Friday, March 30, 2007 Updated: Friday, May 17, 2013
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter T.
Mixing Toilet Bowl Cleaners Created: Wednesday, May 15, 2013 Updated: Wednesday, May 15, 2013
Learn why it's a bad plan to mix toilet bowl cleaners from this firsthand experience.
How To Prepare a Solution Created: Monday, May 13, 2013 Updated: Monday, May 13, 2013
These are the steps to follow to prepare a chemical solution.
Ibuprofen 3-D Structure Created: Saturday, January 30, 2010 Updated: Sunday, May 12, 2013
This is the three-dimensional chemical structure of the non-steroidal anti-inflammatory drug ibuprofen.
Galanthamine Chemical Structure Created: Wednesday, November 14, 2007 Updated: Sunday, May 12, 2013
This is the chemical structure of galanthamine.
L Chemistry Journals and Magazines Created: Thursday, July 16, 2009 Updated: Saturday, May 11, 2013
This is an alphabetical list of chemistry journals and related scientific journals and magazines.
B Chemistry Journals and Magazines Created: Tuesday, July 14, 2009 Updated: Saturday, May 11, 2013
This is an alphabetical list of chemistry journals and related scientific journals and magazines.
Solar Spectrum Created: Friday, February 27, 2009 Updated: Saturday, May 11, 2013
Solar Spectrum
Leidenfrost Effect Demonstrations Created: Friday, May 10, 2013 Updated: Friday, May 10, 2013
There are several ways you can demonstrate the Leidenfrost effect. Here is an explanation of the Leidenfrost effect and instructions for performing science demonstrations with water, liquid nitroge...
Leidenfrost Effect Diagram Created: Friday, May 10, 2013 Updated: Friday, May 10, 2013
In the Leidenfrost effect, a droplet of liquid is separated from a hot surface by a protective layer of vapor.
Nuclear Fusion Diagram Created: Monday, June 28, 2010 Updated: Friday, May 10, 2013
This is a diagram of the fusion reaction between deuterium and tritium.
Nuclear Fission Diagram Created: Monday, June 28, 2010 Updated: Friday, May 10, 2013
This is a simple diagram illustrating an example of nuclear fission.
Science Clipart and Diagrams Created: Wednesday, February 21, 2007 Updated: Friday, May 10, 2013
Collection of science clipart and diagrams, including safety signs, lab equipment, experiments, and more.
Le Chatelier's Principle Created: Monday, August 24, 2009 Updated: Thursday, May 09, 2013
Learn what Le Chatelier's Principle is and how it can be applied to predict the effect of a change in conditions on chemical equilibrium.
Chemistry 11 Created: Monday, July 13, 2009 Updated: Thursday, May 09, 2013
High school chemistry most commonly is offered during the 11th grade as Chemistry 11. This is a list of Chemistry 11 or 11th Grade high school chemistry topics.
Factors that Affect the Chemical Reaction Rate Created: Saturday, March 29, 2008 Updated: Thursday, May 09, 2013
Several factors affect the rate at which chemical reactions proceed. Understanding these factors will help you predict the direction and speed of a chemical reaction.
Virtual Chemistry Text - Thermochemistry Created: Thursday, November 30, 2006 Updated: Thursday, May 09, 2013
Virtual Chemistry Text: Chemistry is the study of both matter and energy. Once you learn to balance the atoms and charge in a chemical reaction, you can examine the energy of the reaction as well.
Chemistry 101 - Introduction & Index of Topics Created: Wednesday, December 10, 2008 Updated: Thursday, May 09, 2013
Welcome to the wide world of chemistry! This is an introduction to Chemistry 101 and an index of concepts and tools to help you learn chemistry.
Copernicium or Ununbium Facts Created: Saturday, May 31, 2008 Updated: Thursday, May 09, 2013
Get periodic table facts on the chemical and physical properties of the element ununbium, which has been named copernicium.
GED Study Guide for Chemisty Created: Tuesday, January 09, 2007 Updated: Thursday, May 09, 2013
One section of the GED or General Education Development Test covers science, including chemistry. This study guide reviews the concepts you can expect to appear on the test.
AP Chemistry Course and Exam Topics Created: Wednesday, March 11, 2009 Updated: Thursday, May 09, 2013
This is an outline of the chemistry topics covered by the AP (Advanced Placement) chemistry course and exam, as described by the College Board.
Types of Chemical Reactions Created: Saturday, August 02, 2008 Updated: Thursday, May 09, 2013
Learn about the different types of chemical reactions and get examples of the reaction types.
Teach Yourself Chemistry Created: Tuesday, September 12, 2006 Updated: Thursday, May 09, 2013
You can teach yourself general chemistry with this step-by-step introduction to the basic concepts.