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: Elizabeth M Young
The atmosphere of the earth is made up of gases which reside in layers of gas that surround the planet. In order to understand the gases of the atmosphere, it helps to know how the atmosphere is constructed and what goes on in the layers...
By: Ernest Capraro
Propane and natural gas have a lot in common. Both are used as fuels, are gaseous, can be stored in tanks and pumped through lines, and have similar safety hazards associated with them. To compare how they are both similar and different, take a look...
By: Elizabeth M Young
A substance is classified as a glass, or as a glassy material, when it is not crystalline in structure, is a solid that has a vitreous and disordered state. Glass is the product of fusion of inorganic material through heat, then cooling to the solid...
By: Elizabeth M Young
The differences between molecules and compounds have been observed and carefully described. Molecules are a group of two or more atoms that are electrically neutral and which are bonded together with very strong chemical bonds that are also called covalent bonds. A single molecule may...
The chemical properties of Helium 3 (He3) and its potential usefulness
By: Steve Lussing
Helium 3 (He-3) nuclei contain 2 protons and 1 neutron, unlike regular helium (He-4) nuclei, which contain 2 protons and 2 neutrons. He-3 is a light, non-radioactive isotope of helium and is very rare on the Earth, but relatively abundant on the moon, which is...
Defining a mole
By: D. Vogt
A mole is a unit of measurement in chemistry, which is used to count how much of a substance is present in a sample. The term was first used by Wilhelm Ostwald of Germany during the 1890s, who presumably intended it to be an abbreviation...
By: John Traveler
You can't see just one of them, but they are all around and in us. They are the smallest stable constructs of matter, and at the same time are little packages of energy. The idea for atoms dates back 25 centuries, when Ionian philosopher Democritus...
Definition of an isotope
By: D. Vogt
Isotopes are atoms which are all of the same element, but differ in terms of the number of neutrons in their nucleus. Although because they are the same elements they will generally be identical in terms of basic physical properties, two significant differences are that...
The differences between organic and inorganic compounds
By: D. Vogt
The essential difference between organic and inorganic compounds is, quite simply, that organic compounds contain carbon. More specifically, it refers to complex molecules based on carbon's unique ability to form up to four chemical bonds per atom; certain chemical compounds contain carbon (carbonates, cyanides, and...
Difference between a molecule and compound
By: D. Vogt
Essentially, a compound is a type of molecule - so a compound is a molecule, but a molecule is not necessarily a compound. In chemistry, a molecule is defined as two or more atoms (the building blocks of all larger matter) joined together in a...

 

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