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.
Element facts: Titanium
By: D. Vogt
Titanium (Ti) is the 22nd element on the periodic table - meaning it has 22 protons in its atomic nucleus. Since its discovery two hundred years ago, it rested as a relatively unimportant metal until the twentieth-century realization that titanium was an exceptionally strong yet...
Element facts: Nickel
By: D. Vogt
Nickel (Ni) is the 28th chemical found on the periodic table of elements - that is to say, nickel atoms always have 28 protons in their nucleus. This grey or even silverish metal is unusual in that it is magnetic, along with just three other...
A brief introduction to atoms
By: D. Vogt
An atom is the smallest unit of stable matter that we speak of in normal conversation. This does not mean that it is the smallest type of matter: atoms themselves are made of smaller components, namely protons, neutrons, and electrons. However, the atom is the...
By: D. Vogt
Manganese (Mn) is the 25th chemical element on the periodic table - that is, its atoms have 25 protons in their nucleus. A naturally occurring metal, manganese is often used in industrial alloy processing and as a rust prevention tool. - Chemical Properties - Manganese...
By: D. Vogt
Boron (B) is the fifth chemical on the periodic table of elements, located on the top right next to carbon. It occurs naturally in several forms, including both powders and crystals, and is a necessary nutrient for all plant species. - Chemical Composition - Boron...
Explaining the difference between physical and chemical changes
By: D. Vogt
Part of the definition of chemistry is the study of changes in matter. There are two basic types of changes which can be observed as part of chemical experiments: physical changes in substances, and chemical changes in substance. While both are significant, they are also...
By: Tarek Musslimani
The chemistry of nitrogen containing organic compounds is mostly governed by the basicity and nucleophilicity of the electron lone pair on nitrogen except when there is more electronegative atom than nitrogen that is attached to nitrogen such as occurs in nitrosylchloride. In this case nitrogen...
By: Tarek Musslimani
Organic chemistry of oxygen bearing carbon centers are alcohols and ethers in addition to carboxylic acids. Peroxides can also be organic but usually inorganic such as hydrogen peroxide. A well known example of alcohol is ethanol. This compound finds uses in alcohol and the beer...
By: D. Vogt
Nitrate and nitrite are both polyatomic ions formed from nitrogen and oxygen: essentially, nitrate molecules contain one nitrogen and three oxygen atoms, but nitrite molecules each contain one nitrogen and only two oxygen atoms. Despite the similarities there are substantial differences in properties and uses...
By: Tarek Musslimani
Transition metals are a group of special metals that are located in the periodic table between the alkaline earth metals and the nonmetals. They have unfilled d-shells with electrons. By definition transition metals are those metals in the periodic table with incompletely filled d-shells with...

 

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