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: James Haile
In 1853 Levi Strauss arrived in San Francisco to open and operate a dry-goods store, a branch of his brother's New York business. By the early 1870s the store was established and prosperous. In 1872 one of Strauss's customers, a Nevada tailor named Jacob Davis...
By: Charles Scott
Quantum physics is the study of subatomic particles and their properties. The electron is represented by a probability cloud surrounding a nucleus, this cloud is said to represent the probability of where an electron might be at any given time. Electrons are said to have...
By: Bryan Belrad
If you were thinking 'One of the gods made them all in a great heavenly forge', you're actually closer than you think.Science can't say whether divinities were actually involved, but, as it turns out, nothing much besides Hydrogen (element #1) forms on its own...
By: Jason Todd
One important thing to remember when discussing toxicology is that nothing can be considered entirely safe. Even water can kill you in great enough amounts. It is the amount of the chemical, or dose, that is important in determining the effect on the body. Other...
By: Anthony Aylward
The substance best known for expanding, rather than condensing, as it freezes is, of course, water. The reason for this unusual phenomenon is that as they freeze, the water molecules form a tetrahedral lattice.Wait, one might ask, what's a tetrahedral lattice?To understand this...
By: Dean L. Sinclair
While atomic orbitals are often understood in the Bohr model as if they were analogous to planetary orbitals, or are explained as wave motions in quantum mechanical terms, there is an unpublished approach to understanding electronic orbital structures which might be of interest to some...
By: The Jedi Chemist
Inexpensive and efficient, reusable heat packs are slowly gaining popularity, especially with the trend for the world to become more "green." They appear to be innocent looking, soft-plastic pouches containing some sort of clear liquid and a concave metal disc with gratings sealed inside...
How atoms work
By: Rex Trulove
For a very long time after atoms were first theorized, not very much was known about them, and they were believed in theory to be the smallest particles of all. We now know that this isn't the case. Atoms have structures and are made up...
By: Camilla Connors
When I first walked into my Chemistry class, I remember seeing a multitude of test tubes and posters galore. Visions of blowing stuff up and making beakers overflow with dangerous chemicals danced pleasantly in my head. On one wall of my professors class room was...
By: Svetlana Elizabeth
Attractive crystals can be made from everyday ingredients, with no specialist equipment. Table salt crystals make a popular science fair project, especially when the results are compared with crystals made from other materials, such as Epsom salt or sugar. They can also be made as...

 

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