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: Ernest Capraro
Calculating the Molarity of WaterChemistry teachers often like to challenge their students with this one. It combines the use of concentration, density, and molar mass all in one problem, along with an added twist. (What could a truly warped chemistry teacher enjoy better than that...
By: Raven Lebeau
If you take an introductory chemistry class, you will no doubt memorize a list of shapes that correspond to particular combinations of lone pairs and bonds around a central atom. Very simple molecules can be classified this way, and based on geometries one can predict...
By: Ernest Capraro
What is a Polymer?You could start by breaking down the word: it's made of two pieces of course, "poly" and "mer". Most everyone should know that the prefix "poly" means "many", as in polygon (many angles), polymorph (an organism with many adult forms), polyunsaturated...
By: Ernest Capraro
Yes, the word is a mouthful, but it also sounds a lot like another word you are probably more familiar with. No, I don't mean "Colgate". "Collective" is the word I had in mind. Better yet, the two words (colligative and collective) are very similar...
By: J. Herman
The U.S. is running out of helium. And it's not something to make light of.The largest U.S. helium reserve is depleting as U.S. helium suppliers export the gas to an expanding international market. According to the International Balloon Association, in 2005...
By: Anne Christie
The Discovery of Neon The year is 1895, and while at the British Museum, Henry Meirs tells Sir William Ramsay about a mineral, cleveite, which gives off a gas which Meirs thinks is nitrogen. So, the Scottish Chemist sends his technician off to the minerals...
A look at the helium industry in the US economy
By: Effie Moore Salem
Helium is an important industry in the United States. So much so an important part of the economy of the United States that special legislation was passed in 1996 protecting its use and assuring it would be available as needed. (Helium Privatization Act, October 9...
By: Eve Redstone
Neon was named from the Greek word for new, neos, by its discoverer Sir William Ramsey.Sir William's main passions in life were far eastern and Greek culture and archeology but his fame came from his work in Chemistry. In 1898 Ramsey and his colleague...
By: Eve Redstone
Helium 5 is an artificially produced isotope of the naturally occurring helium gas. Helium is the second lightest element, and heads the noble gas group of the periodic table. It occurs naturally as the helium-2 and helium-3 isotopes, the main sources being the natural gas...
By: Tricia Lye
Calcium, a white silvery soft alkaline metal, forms about 3% of the earth's crust and is placed 22nd in the periodic table, after magnesium. Rarely found in its raw form, it is often sequestered or locked in limestone, fluorite and gypsum. It is abundantly found...

 

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