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: Erich Rosenberger M.D.
Chemistry students at any level are confronted with a variety of laws that serve to explain the reactions of gases to various different conditions. In broad terms, these laws are the study of thermodynamics, and are vital to much modern engineering and science. Boyle's Law...
By: Erich Rosenberger M.D.
If you are a high school or college chemistry student, you are no doubt aware of the Ideal Gas Law. In fact, it is likely that this equation has given you nightmares and cold sweats as you think about what variable goes where. The Ideal...
By: Louis Rosenfeld
An atom is the basic unit of chemical substances. All matter is composed of atoms. Dalton, the first scientist to define the atom on the basis of scientific evidence, thought that atoms were indestructible and not able to be divided. In the 1890s through the...
The chemistry of soap
By: David Smith - 534884
Actually, all soaps are detergents, because "detergent" is a broader term than "soap". One chemistry book author proposed the term "syndet" to distinguish soaps from synthetic detergents, but it did not catch very much attention, since it was a rather silly term. As the previous...
By: Ernest Capraro
Envision that tremulous moment when little Bobby reached to place the nine-hundred thirty-second domino (with only sixty-eight remaining) just as the telephone rang. He twitched, and the tap from his finger sent the entire chain spilling dramatically in spirals and branches, mere moments before he...
By: Alison Bowler
What is a carbocation? Well cations are positively charged ions and "carbo" come from carbon so carbocations are positively charged carbon ions. They are intermediates in chemical reactions involving organic compounds. Some older literature refers to carbocations as carbonium ions but the term is falling...
By: Helena Whyte
Common hazardous household chemicals include oven cleaners, drain openers, wood and metal cleaners and polishes, degreasers, air fresheners, toilet cleaners, shower and tile cleaners, dishwasher detergents, floor polish strippers, carpet spot removers, moth repellents, rat poisons, pesticides, adhesives and glues, paint strippers, paints, photographic chemicals...
The chemistry of gasoline
By: Jon Clark
Gasoline - we call it petrol in the UK - makes the world go round. It is difficult to imagine what would happen to our daily lives if it ran out tomorrow. What is this liquid that our current society in the West depends on...
A brief guide to the states of matter
By: Tom Brend
The state of a matter is a variable property of matter. The state of a substance can be influenced by heat and pressure, thus changing the substance's state of matter. As this is thought to be an introduction, we focus on the classical states of...
How does activation energy relate to kinetics?
By: Ernest Capraro
Activation energy and the rate at which occurs (chemical kinetics) are inversely related. While activation energy is not the only factor that influences reaction rates, it is generally true that increasing the activation energy of a given reaction slows it down, and that lowering the...

 

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