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 baking soda and baking powder
By: Barb Hopkins
The secret to making light, fluffy, and flavorful baked goods is in understanding the differences of the leavening agents baking soda and baking powder. A leavening agent is a component in dough or batter that causes a foaming reaction that will soften and add air...
By: Raven Lebeau
Arsenic is one of the "bad boys" of the periodic table. It's been called the "king of poisons" and the "poison of kings," although it's more likely to be used for rat poison than for regicide. While it's true that arsenic is toxic, this...
The characteristics of an atom
By: Dave Simmons
Atoms are about as small as anything gets, at least in any terms the average person can comprehend. Any smaller, and you're looking at a particle that no longer retains any of its chemical properties: You can't have, for instance, half an oxygen atom, without...
By: Ernest Capraro
Like anything that floats on water, ice floats because it has a lower density than water. This seems strange to most people (myself included at times) for a couple reasons. In most of our experiences, solids are supposed to sink. And then, ice IS water...
An overview about the chemical element Samarium
By: Alison Bowler
Samarium Symbol: Sm Atomic Number: 62 Atomic Mass: 150.36 amu (atomic mass units) Melting Point: 1072.0°C (1345.15 K, 1961.6°F) Boiling Point: 1900.0°C (2173.15 K, 3452.0°F) Number of Protons: 62 Number of Electrons: 62 Number...
An overview about the chemical element Praseodymium
By: Alison Bowler
PraseodymiumChemical Symbol: PrAtomic Number: 59Atomic Mass: 140.90765 amu (atomic mass units)Melting Point: 935.0 C (1208.15 K, 1715.0 F)Boiling Point: 3127.0 C (3400.15 K, 5660.6 F)Number of Protons/Electrons: 59Number of Neutrons: 82Classification: Rare Earth MetalCrystal Structure: HexagonalDensity @ 293...
By: Morgan Johnson
The metalloid Boron (B) is a versatile and useful element that has found many different uses in domestic and industrial processes in more advanced cultures.Physical characteristics:Atomic number - 5Atomic mass - 10.811Atomic group IIIAOxidation state - +3Isotopic states - 14Stable Isotopes - 2Boron...
By: Raven Lebeau
The most common "every day" use of the element boron is in the cleaner known as Borax. This cleaning agent is a simple chemical compound called boric acid. Cheap and relatively nontoxic, it is an excellent antifungal agent and can help around the house with...
By: Janet Grischy
Ytterbium, symbol Yb, is a member of the lanthanoid group of elements, which were originally called the rare earths. Its atomic number is 70, meaning it has 70 protons in its nucleus. It has many isotopes, that is, many species it appears in. These species...
By: D. Victor
Generally, substances are most dense when they are in their solid state. That ice is known to float on water conclusively proves that water is an exception. We are also aware that lakes freeze from top to bottom. In order for an object to float...

 

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