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.
What makes a lava lamp work
By: Paul Guardino
Oh wow, groovy man! It’s a blast back to the 1970s, and you want to know what makes a Lava Lamp—officially called a Lava Lite®—flow. The physics can get complicated and mathematical, but what’s mainly at play with any Lava...
Explaining Niels Bohr's atomic theory
By: John Louie Ramos
The Bohr model is a graphical model of an atom introduced by Danish physicist, Neils Bohr. Basically, the Bohr is an illustrative presentation of the atomic structure. It gives an overview of the basic atomic components and functions in a way quite similar to the...
By: Ernest Capraro
The age-old question “What should I wear today?” takes on new meaning when the chemistry teacher announces that tomorrow’s lab will use concentrated acids. Indeed, what should the student wear? Looking great may be important, sure, but it does little good if...
By: Ernest Capraro
Crystals are a highly organized form of matter. This is obvious to anyone who has looked at crystals, as they naturally tend towards particular geometric shapes. Each crystalline compound has a characteristic form, regardless of its size. This rigid organization continues down to the placement...
By: Dawn Denmar
The periodic table is a tool used in chemistry which lists and ranks elements - gas and solid - by grouping according to weight and atomic number. Conceptions of science were altered by the development of the periodic table and this is still is a...
Middle school chemistry projects: Exploring the properties of sulfur
By: Ernest Capraro
When introducing the elements, it is always more fun for the students if they have the opportunity to examine a few rather than just hearing about them. Sulfur presents an excellent opportunity, as it has a fairly unique set of properties, without being terribly hazardous...
Examples of chemical changes
By: Ernest Capraro
Chemical changes come in many forms, but we teach that there are certain clear signs that can indicate that a chemical change has taken place. Those signs, while not always absolute proof of a chemical change, provide an excellent way to categorize a few examples...
States Matter Gas Liquid Solid Plasma Superfluid Super Fluid Bose Einstein Condensate
By: Ernest Washburn
It is agreed upon by physicists worldwide that there are five states of matter. The three common states that occur under "normal" conditions on earth are gases, liquids, and solids. The other two are plasma and superfluids (also known as Bose-Einstein Condensates). A state of...
Understanding the periodic table of elements
By: Martha Davis - 580038
The periodic table is an organization of all the known elements (including those only synthesized in a lab). Each box on the periodic table represents an element and includes the chemical symbol, atomic number, and average atomic mass. The chemical symbol is basically an abbreviation...
Chemistry science fair projects: Common chemicals that help melt ice
By: Ernest Capraro
Residents of colder climes are familiar with salt trucks that scatter their loads over the road after (or during) a heavy snowfall. Rock salt was historically a relatively cheap and widely available resource. Recent years have demonstrated that demand can exceed supply. Environmental concerns about...

 

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