Wednesday, August 31, 2005
What Is a Neutron Bomb?
Learn what a neutron bomb is, how it works, and about a neutron bomb's strategic uses.
Tuesday, August 30, 2005
Chemistry 101
The Chem 101 one-page index has been updated to include more concepts and resources.
Wednesday, August 24, 2005
Crystal Growing Quiz
Are you an ace at growing your own crystals? Test your knowledge about seed crystals, the factors that affect crystal growth, and crystal types with this fun multiple choice quiz.
Tuesday, August 16, 2005
Absinthe Chemistry
The liqueur absinthe has been enjoying a resurgence in popularity, as countries continue to lift the ban on making and drinking the green wormwood and anise-flavored spirit. Learn about the history of the liqueur, why it was banned, a bit about its chemistry, how to make absinthe, and how to drink it.
Thursday, August 11, 2005
Thujone Structure
Molecular structure of thujone, a terpene found in wormwood (Artemisia absinthium) and the liqueur absinthe.
Thursday, August 4, 2005
How to Perform a Recrystallization
Recrystallization is a laboratory technique used to purify a sample based on the different solubilites of its components. Learn how to perform a recrystallization and get tips on how to avoid common problems and improve your product yield.
Tuesday, July 26, 2005
Why Does Ice Float?
Learn about density and hydrogen bonding to understand why ice floats on water.
Tuesday, July 19, 2005
How to Make Moonshine
Moonshine is a liquor made from fermented corn. Learn about distillation, condensation, and how this alcoholic beverage is made.
Wednesday, July 13, 2005
Chemistry Clip-Art
Several new images have been added to the Chemical Structures library, including some lab equipment. Additions are: vitamin E (tocopherol), vitamin K, vitamin M (folic acid), beaker, erlenmeyer flask, bunsen burner, and thermometer.
Tuesday, July 5, 2005
How Pregnancy Tests Work
Learn how blood tests and home pregnancy urine tests work, how early they can be used, and some reasons for false positive and negative test results.
Tuesday, June 28, 2005
Molecule Hangman Game
This hangman game draws on names of molecules from the Molecular Structures Library. Possible chemicals include amino acids, nucleic acids, chemical warfare agents, pesticides, molecules found in food, and other names from the libary list.
Wednesday, June 22, 2005
Molecules with Strange Names
Several new molecules with strange or funny names have been added to this index.
Wednesday, June 15, 2005
Science Hangman Game
Here's a hangman game, just for fun, using scientific terms, types of sciences, and names of scientists from all disciplines. It's a very broad category. Can you guess the word in time?
Wednesday, June 8, 2005
Make Liquid Magnets
Make your own ferrofluid, or liquid magnet, which can be used with a magnet to change the liquid's density and to form spikes and other amazing shapes.
Wednesday, June 2, 2005
Caffeine Chemistry
Learn about the chemical and biological properties of caffeine, the methylxanthine stimulant found in coffee and other foods.
Wednesday, May 25, 2005
Chemical Structures
Caffeine and snoutane have been added to the collection of molecular structures.
Wednesday, May 11, 2005
Groups of Elements - Periodic Table
Elements can be categorized according to their similar properties. Here's a periodic table that organizes the elements according to groups. Click an element symbol and learn about the group to which it belongs.
Wednesday, May 11, 2005
What Is Activated Charcoal and How Does it Work?
Activated charcoal isn't the same as your average barbeque briquette! It's a special type of carbon. Learn what activated charcoal is and why it is used in filters and medicines.
Wednesday, May 4, 2005
Atom Hangman Game
All of the words in this hangman game relate to atoms or parts of atoms. It's a fun and easy way to test your grasp of some elementary chemistry terms and concepts.
