08/08/07 - Periodic Tables
Tour this gallery of periodic tables, including a free general periodic table, Mendeleev's original periodic table, and an English translation of Mendeleev's table.
08/01/07 - Measurements, Units, & Conversions Quiz
Take a multiple choice quiz to test your comprehension of units, conversions, and significant figures.
07/24/07 - Ultimate Colored Smoke Bomb
Make a smoke bomb that billows clouds of brightly colored smoke. This project is easy and safe enough to at home. Adult supervision is required.
07/22/07 - How to Perform the Mohs Test
The Mohs test is one way to determine the hardness of a rock or mineral. You can use the Mohs hardness to help identify an unknown specimen. Here's how you can do the test yourself.
07/21/07 - Mohs Scale of Hardness
The Mohs scale of hardness measures how well a substance resists scratching by another material. You can use this scale to test the hardness of rocks, minerals, and crystals, to help identify them.
07/19/07 - What Is the Coastal Dead Zone?
The coastal dead zone makes news headlines from time to time because it's implicated in fish death and may be a consequence of global warming and pollution. Do you know what the dead zone is?
07/18/07 - Chemical Engineering & Chemical Engineers
Are you confused about how chemical engineering differs from pure chemistry or other types of engineering? Here's an explanation of what chemical engineering is and what chemical engineers do.
07/13/07 - Dancing Gummi Bear Demonstration
Place a Gummi Bear candy into a test tube containing molten potassium chlorate and watch it dance amidst purple flames. This stunning demonstration is an example of a strongly product-favored reaction, plus it's a lot of fun.
07/11/07 - Ivory Soap Microwave Trick
Microwave a bar of Ivory soap and watch it expand to over six times its original size. The foam trick is good clean fun, plus it can be used to demonstrate Charles' Law, physical change, and foam formation.
07/04/07 - How Does Sunscreen Work?
Find out how sunscreen works, what an SPF rating means, the difference between sunscreen and sunblock, and how to protect yourself from both UV-A and UV-B radiation.
06/27/07 - Why Do Clothes Wrinkle?
Learn why clothes wrinkle and how permanent press fabrics work. It's a matter of polymer chemistry and chemical bonding.
06/20/07 - Candy Chromatography
Analyze the dyes used in your favorite candies with paper chromatography using a coffee filter, colored candies, and a salt solution.
06/17/07 - What Is the Difference Between an Ionic and Covalent Chemical Bond?
Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
06/15/07 - Home Chemistry Supplies List
This is a list of chemicals you can obtain easily and safely store at home for projects and experiments.
06/12/07 - Bonds & Compounds Quiz
This ten question multiple-choice quiz will test your understanding of the types of chemical bonds, how electrons are transferred between elements in a compound, and how compounds form.
06/05/07 - Rainbow in a Glass Density Demonstration
Make a rainbow in a glass using colored sugar solutions with different densities. This project is very easy and safe enough to drink.
06/05/07 - Bend Water with Static Electricity
Use static electricity to bend a stream of flowing water. This is an easy science activity that illustrates how opposite electrical charges attract each other.
06/05/07 - Why Does the Pool Turn Blonde Hair Green?
Do you think it's the chlorine in the swimming pool that turns blonde hair green? Guess again.
06/02/07 - Home Chemicals List
This is a list of chemicals you can obtain easily and safely store at home for projects and experiments.
05/29/07 - Elements Listed by Density
See the order of the chemical elements according to their density (mass per unit volume), from least dense to most dense.
05/26/07 - Orange Potassium Dichromate Crystals
Do you want crystals that are naturally bright and colorful? Grow orange crystals of potassium dichromate.
05/25/07 - Copper Acetate Monohydrate Crystals
It's easy to grow blue-green monoclinic crystals of copper acetate monohydrate.
05/25/07 - Calcium Copper Acetate Hexahydrate Crystals
Calcium copper acetate forms beautiful blue tetragonal crystals that are easy and fun to grow yourself.
05/21/07 - 10 Nitrogen Facts
Get handy facts for the element nitrogen.
05/21/07 - 10 Oxygen Facts
Learn some interesting facts about the element oxygen.
05/18/07 - Colored Smoke Recipes
Colored smoke is easy to make and requires few ingredients. Here's a list of some colored smoke formulations to try.
05/16/07 - Smoking Fingers Trick
Make your fingers smoke when you rub them together and glow in the dark. All you need is a matchbox and a way to burn the striker portion.
05/15/07 - How Do Safety Matches Work?
Learn about how safety matches work and why they are considered 'safe'.
05/14/07 - Chemical Composition of Air
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.
05/11/07 - Potato Clock
A potato can function as an electrochemical cell or battery. It's fun to use a potato to power an LED clock.
05/09/07 - Fruit Ripening & Ethylene Experiment
Measure the ripening of fruit from exposure to the plant hormone ethylene by testing starch levels with an iodine solution.
05/01/07 - Cup of Quick Crystal Needles
Grow a cupful of epsom salt crystal needles in your refrigerator. It's quick, easy, and safe.
