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: Ebey Soman
A solution is a homogeneous mixture in which one substance (solute) is uniformly distributed throughout a second substance (solvent). The amount of solute dissolved in the solvent is its "concentration"Concentration can be measured several ways, in terms of "percent concentration", which is just the mass...
Exploring the ozone layer
By: Wanderer
Ozone in Two PlacesThe type of oxygen we are familiar with is diatomic oxygen, O2, the one we breathe. There is another molecular form of oxygen known as ozone, given by the chemical formula O3. It is now common to hear about the hole in...
By: Ebey Soman
Acids can be defined several ways. The most commonly used definition is the Arrhenius definition. An acid is a compound that releases H+ ions in solution.According to the Arrhenius definition, a base is a compound that releases OH- ions in solution.When an acid...
By: Vadim Osadchi
Glowsticks, since their invention nearly 30 years ago, have been made popular by millions across the world. Without use of battery or bulb, without heat, the sticks provide light with a snap. The magic' behind a glowstick's light is due to a chemical reaction, involving...
By: Ernest Capraro
Sodium is a metal in its pure form, but not like what you'd normally think of as a metal. It is extremely soft - so soft that you can scrape pieces off with a plastic spoon. A freshly scraped piece of sodium has the shiny...
By: Stanley Roberts
Mood rings, being very popular in the 1970's, are one of the easiest novelty items to explain. Many people use them today for biofeedback and determining anxiety levels. In the days past they were used to keep a check on your emotions. They are more...
By: John McDevitt
Fuel emissions: The difference between diesel and biodiesel exhaust The switch from diesel to biodiesel fuels is going to make the air you breathe a lot healthier. The exhaust emissions from biodiesel fuels are much cleaner than petroleum based diesel fuel emissions. In fact, research...
By: John McDevitt
Mood rings are more than just toys. Mood rings are based on the same scientific principles used in temperature sensitive biofeedback sessions where sensors are attached to a person's fingers or feet to measure changes in skin temperature. Mood rings use the same principle and...
By: Nancy Houser
Ahh...sweet alchemy. The advanced metaphor of life. Egyptian tradition says early Egyptians were taught alchemy by their god, Thoth, who was originally believed to be a moon god while also associated as the god of wisdom, learning, and magic. Thoth was believed to be...
An introduction to alchemy
By: Effie Moore Salem
The ancient pseudoscience of alchemy is the forerunner of modern chemistry. It began in China, India and Greece, and then was adopted by Egypt. Astrology was intertwined with their beliefs and practices of this primitive art. In order for any of their concoctions or their...

 

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