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: Jonte Rhodes
Carbon is the fourth most common element in the universe, behind hydrogen, helium and oxygen respectively, and is also the basis of all forms of life on earth. The name carbon comes from the Latin word Carbo, meaning coal, which was probably its earliest discovered...
By: Alison Bowler
Tin Symbol: Sn Atomic Number: 50 Atomic Mass: 118.71 amu (atomic mass units) Melting Point: 231.9 C (505.05 K, 449.41998 F) Boiling Point: 2270.0 C (2543.15 K, 4118.0 F) Number of Protons: 50 Number of Electrons: 50 Number...
By: Raven Lebeau
The famous blue bottle experiment a visually dramatic way to teach reduction-oxidation (redox) chemistry. Students from grade school to grad school find this reaction memorable and it is considered a classic staple in chemical demonstration shows. A half-full bottle of colorless liquid turns blue when...
By: Alison Bowler
Darmstadtium Symbol: Ds Atomic Number: 110 Atomic Mass: 281 amu (atomic mass units) Melting Point: Unknown Boiling Point: Unknown Number of Protons: 110 Number of Electrons: 110 Number of Neutrons: 171 Classification: Transition Metal (Man made) Crystal Structure: Unknown Density @ 293 K: Unknown Color:...
By: Alison Bowler
Manganese Symbol: Mn Atomic Number: 25 Atomic Mass: 54.93805 amu (atomic mass units) Melting Point: 1245.0 C (1518.15 K, 2273.0 F) Boiling Point: 1962.0 C (2235.15 K, 3563.6 F) Number of Protons: 25 Number of Electrons: 25 Number...
By: Alison Bowler
Ununhexium Symbol: Uuh Atomic Number: 116 Atomic Mass: 291 (atomic mass units) Melting Point: Unknown Boiling Point: Unknown Number of Protons: 116 Number of Electrons: 116 Number of Neutrons: 176 Classification: Metal (man made) Crystal Structure: Unknown Density @ 293 K: Unknown Color: Unknown Ununhexium...
By: MD Lynn
Fake blood costs a small fortune for the good stuff when you buy it in the squeezable tubes at the store. While you can buy Halloween fake blood for cheaper, it tends to be thin and watery and it won't last the night. If you're...
What are ions?
By: Jeffrey Graf
An ion is an atom or molecule that has an electrical charge. When an atom or molecule loses an electron, it gains a positive charge, and when a chemical gains an electron, it gains a negative charge. Ions are usually designated by their chemical name...
By: Lime Red Tetrahedron
Origins and Use of the Kelvin Temperature ScaleHumankind is constantly seeking to improve its understanding of the fundamental properties of nature. As a result of this curiosity, mankind has devised numerous methods of taking quantitative measurements. As the years passed, we abandoned many of these...
Stoichiometry: Basics and calculations
By: Lime Red Tetrahedron
Stoichiometry: Basics and CalculationsStoichiometry can seem daunting to the beginning chemistry student, but is perhaps one of the most basic and simple concepts in any chemistry course. Stoichiometry refers to the fixed ratios in which substances react, and the analysis that is enabled through the...

 

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