Tuesday, April 26, 2005
Basics of Acids & Bases Quiz
How well do you understand the basic concepts of acids, bases, and pH? Here's a ten question multiple choice and true/false quiz you can take to test yourself.
Tuesday, April 19, 2005
Chemistry Glossary
Definitions and examples have been added for the following terms: miscible, mixture, molality, molarity, molar mass, mole, mole fraction, molecular formula, molecular geometry, and molecular mass.
Tuesday, April 12, 2005
Carbon-14 Dating
Here's a worked example of the calculation for carbon 14 dating of organic material. The same principle can be applied to other isotopic ratios used to estimate age.
Tuesday, April 5, 2005
Platinum Facts
Information has been added on the word origin, isotopes, properties, uses, and sources of the metal platinum.
Tuesday, March 29, 2005
Grow Table Salt or Sodium Chloride Crystals
It's easy to grow your own table salt or sodium chloride crystals. All it takes is salt and boiling water. One method even yields crystals within a few hours. Another method can yield perfect cubic crystals.
Tuesday, March 22, 2005
Can a Candle Burn in Zero Gravity?
Can a candle burn in the absence of gravity? Here's the answer to this frequently asked question about fire.
Wednesday, March 16, 2005
Which Elements Are Named After People?
Here's an alphabetical list of element eponyms, or chemical elements named after people.
Tuesday, March 9, 2005
If civilization ended today, could I still make beer?
Not all frequently-asked chemistry questions involve equations and complex chemical reactions. When you get right down to it, chemistry plays a big role in everyday existence. For instance, consider the brewing of beer, stout, ale, and lager. If modern society ended, do you think you would have what it takes to make your own beer?
Tuesday, March 1, 2005
Chemistry Glossary
Definitions have been added for addition polymer, addition reaction, alcohol, aldehyde, alkaline, alkaline earth metal, alkyl group, allotrope, alloy, and alpha particle.
Tuesday, February 22, 2005
Scientific Method Quiz
Do you really understand what the scientific method is and how to apply it? Here's a ten question multiple choice quiz you can take to test your knowledge.
Tuesday, February 15, 2005
Radon Facts
Information has been added concerning the discovery, word origin, isotopes, properties, and sources of the element radon.
Tuesday, February 8, 2005
What is the State of Matter of Fire or Flame?
Is flame a liquid, solid, or gas? Learn the answer to this question and get information about the chemistry of fire.
Tuesday, February 2, 2005
Effect of Acids and Bases on the Browning of Apples
Perform an experiment to observe the effects of acids, bases, and water on the rate of browning of cut apples or other produce.
Monday, January 24, 2005
Why Do Cut Apples Turn Brown?
Learn why apples, pears, bananas, potatoes, and other fruits and vegetables turn brown when they are cut or bruised.
Monday, January 17, 2005
Arsenic Facts
The fact sheet for arsenic has been updated to include information about the element's properties, uses, and sources.
Monday, January 10, 2005
How to Grow Epsom Salt Crystals
Epsom salt (magnesium sulfate) crystals are safe to handle, easy to grow, and form quickly. Here's what you need to know to make your own crystals.
Monday, January 3, 2005
Rock & Mineral Chemistry Quiz
Do you know about the chemistry of rocks and minerals? Here's a ten question quiz you can take to test your knowledge.
