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.
The difference between exothermic and endothermic chemical reactions
By: Dawn R. Cole
All chemical reactions start with the reactants having some sort of energy activation that results in the bonding of the two material's molecules and forms a new product. The most common form of energy is heat; either the chemical reaction will cause the blended mixture...
6th grade chemistry experiments
By: Michael Frissore
In sixth grade I was forced to come up with something for a science fair. I wasn't a very crafty child. I had plenty of book smarts and was getting A's and B's in all my classes, but when it came to making something, it...
The ideal gas law
By: Reynold Conger
The volume of a gas changes with temperature, pressure and the number of molecules in the container. Early workers used experimental data to derive Charles Law and Henri's Law. They recognized that these laws were imperfect in that they did not take into account the...
How to make fake blood
By: Currie Jean
Be it Hallowe'en or a youtuber's B horror movie, realistic blood is a must. Nothing wrecks a good costume or film experience like bright red ketchup, red paint, or a simple corn-syrup-and-food-coloring mixture. It's got to be dark and somewhat thick to look convincing, and...
By: Marc Phillippe Babineau
Candles have been around for centuries, and they will probably be here for just as long as mankind is walking this time-bomb of a planet. When electricity fails, batteries can be a mans' best friend. But when the batteries die out, and there are none...
How to make sugar combust
By: Ernest Capraro
Sugar is a repository of chemical energy. Your body breaks it down enzymatically to release that energy, powering most everything you do. Such a potent fuel, one would half expect it to burn easily. But then, if you take a teaspoon of sugar and stick...
By: Raven Lebeau
The word "chemistry" calls to mind vile-smelling concoctions that necessitate the use of lab goggles and gloves. However, in reality, all substances are "chemicals," even everyday substances like water and tasty ones like sugar. Hence, coming up with a fun and easy chemistry experiment...
By: Ernest Capraro
A quick read of the ingredients list is revealing, for an introduction. Baking soda is sodium bicarbonate, also known as sodium hydrogen carbonate, the monosodium salt of carbonic acid, and bicarbonate of soda. By any name, the chemistry is the same. Baking soda has...
How to make ice cream in a bag
By: Currie Jean
Store-bought ice cream can be quite expensive, as well as full of unexpected, unexplained ingredients. Still, we usually go out to buy ice cream - few realize that it can be made at home, quickly, easily, and inexpensively, in under ten minutes. What follows is...
How to make ice cream in a bag
By: Jody Barnes
Learning important principles of chemistry can be combined with making tasty treats by using the process of making ice cream to demonstrate the concept of freezing point depression. When a solute (such as salt) is added to a solvent (such as water) there are changes...

 

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