Sunday, May 30, 2004
Alchemical Symbol Index
Here's a look at the alchemical symbols of the elements. Along with the symbol image, you'll find facts about how the element was used in alchemy.
Monday, May 24, 2004
What Is the Smelliest Substance?
There are some man-made chemicals with a stench well beyond the gentle perfume of dirty gym socks and skunk spray. Do you know the names of these super-stinkers?
Monday, May 17, 2004
Can You Drink Too Much Water?
It's important to drink plenty of fluids, but can you overdo it? Learn the truth about water intoxication and hyponatremia.
Monday, May 10, 2004
What Is the Lightest or Least Dense Solid?
I'll give you a hint: it isn't styrofoam! The world's lightest solid resembles a sort of solid smoke, with a density of only 1.9 mg/cm3.
Friday, May 7, 2004
Water - Wine - Milk - Beer Chemistry Demo
Chemistry demonstrations in which solutions appear to magically change color leave a lasting impression on students and help instill an interest in science. Here's a color change demo in which a solution seems to change from water to wine to milk to beer simply be being poured into the appropriate beverage glass.
Thursday, May 6, 2004
Iodine Facts
The periodic table entry for iodine has been expanded to include information about the element's word origin, isotopes, properties, uses, and sources.
Sunday, May 1, 2004
Briggs-Rauscher Oscillating Clock
The Briggs-Rauscher reaction, also known as 'the oscillating clock', is one of the most common demonstrations of a chemical oscillator reaction. The reaction begins when three colorless solutions are mixed together. The color of the resulting mixture will oscillate between clear, amber, and deep blue for about 3-5 minutes. Let's try it!
