Chemistry

Every moment of every day, chemistry plays a part in all we experience. This branch of the Helium network humbly attempts to illuminate the vast array of chemical knowledge, making it accessible to all. Let our site inform, inspire, and awe you with chemical wonders.
By: Janet Grischy
Iodine, symbol I, is a member of the halogen group of elements. Halogens are only found in nature as compounds or ions, because of their highly reactive tendencies. The atomic number of iodine is 53, meaning it has 53 protons in its nucleus. It has...
By: Bridget N. Watts
Whether you are preparing for Halloween, playing a vampire in a local stage production or are about to attend a horror dress up party, you might look a lot scarier if you add some fake blood to our outfit. You can buy fake blood at...
The characteristics of an atom
By: John Traveler
All matter in the universe is composed of atoms. There are 92 naturally occurring types of atoms, representing the basic chemical elements. In addition, there are 26 elements predicted to exist as of March 2008. Of these, 25 have actually been synthesized through successive bombardment...
Why we have the periodic table
By: John Traveler
Why we have the periodic table:In the early nineteenth century, John Dalton would add his own two cents worth to a debate that had continued since the time of Aristotle and Democritus. The question being: What is all the matter of the world composed of...
Why ice floats on water
By: Heather Lyon
Ice floating is one of the unique properties of water. Most other matter is denser when it is frozen or in a solid form and therefore would sink when place in the liquid form of the same matter. Ice floating is actually a very important...
An overview of the chemical element Hydrogen
By: Janet Grischy
The stars are mostly made of hydrogen. Not entirely though. The sun, for example, is only 91.2 percent hydrogen atoms. It converts hydrogen to helium atoms, in a fusion reaction that gives off the energy that powers all life on earth. Taken together, hydrogen...
By: Ernest Capraro
Probably no other chemical has found its way onto so many T-shirts as caffeine. (Water might be a close second.) Even people who have never touched a chemistry book are familiar with this molecule, primarily because they love to drink caffeinated beverages. Caffeine's best-known...
An overview about the chemical element Plutonium
By: John Traveler
Plutonium is one of the most exotic substances known to man. In fact, there is much about this elements properties which remains poorly understood at best, and some behaviors exhibited by it that are barely understood at all. One reason for this is the fact...
By: Ernest Capraro
There are certainly easier pursuits out there, but it is indeed possible to make crystals using rocks as your starting material. We simply have to use chemical and physical approaches that somehow lead to crystal formation. Nature provides most crystals through one of two processes...
By: Ernest Capraro
Acid-Base indicators provide a quick, visual reference. They show (indicate) by color whether a material is acidic (less than pH 7) or basic (greater than pH 7). An acid-base indicator does not tell you how acidic or basic a solution is, only which. This limits...

 

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