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: M. J. Joachim
The Predictability of ColorMood rings work with the flow of blood from our bodies. As our blood heats and cools, colors on the ring respond to its temperature. Our bodies adjust the colors of mood rings based on the heat generated from our emotions. Their...
By: Ernest Capraro
When learning about atoms, students soon learn about isotopes atoms of the same element that vary only in how many neutrons they have.When learning about elements, the concept of allotropes is similar. Allotropes are different forms of an element that vary only in how...
By: Larry Mason
Spontaneous combustion has always had some mystical quality about it. How can an object suddenly (or slowly) burst into flames in the absence of any apparent ignition? During the Dark Ages it was associated with witchery or other satanical powers. Persons associated with such a...
Exploring the ozone layer
By: Nancy Houser
A 2006 NASA study has extended the anticipated time for the full recovery of the ozone layer over the South Pole, and scientists have concluded that an additional twenty years will be necessary. A new computer model developed by scientists from NASA, The National Oceanic...
By: Ernest Capraro
"Halogens" is the name for a family of chemical elements. They are found in group seven of the periodic table, the second column from the right. They are all electronically similar, having seven electrons in their outermost (valence) shell. Because this is only one electron...
How big is a mole in chemistry?
By: Ernest Capraro
Moles, of course, are furry critters with poor vision that dig up gardens and golf courses. They're smaller than your average cat. For students of chemistry, however, the mole is a magic (and often mysterious) number. The mole is nothing more than a counting number...
By: Ernest Capraro
To the average person, the word "aromatic" usually means "pleasingly fragrant". For chemists too, it held this meaning originally. Over time, chemists found that certain organic compounds were much more stable (unreactive) than was normal for similar chemicals. Because many of these molecules were also...
By: Ernest Capraro
My favorite cookie recipe (whole wheat chocolate chip cookies with cashews) says that it will make 48 cookies, and yet I've never gotten more than 30 when I make them. That means I'm only getting 62.5% of the number of cookies I'm supposed to...
By: Ernest Capraro
In an ideal world, there would always be an equal number of hot dogs and hot dog buns, the peanut butter would be used up in the same sandwich that finishes off the jelly, and there would always be enough clean underwear to last until...
By: Ernest Capraro
Stoichiometry is often the bane of a chemistry student's existence. Unlike many lessons which can be learned and forgotten after the test, stoichiometry is a tool that is used constantly throughout the remainder of chemistry. If the skill is not learned, it makes difficult or...

 

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