A term used to describe molecules and polyatomic ions that have one atom in the center and four atoms at the corners of a square.
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Features of the Scanning Tunneling Microscope
The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...
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Use of diamonds
Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...
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Harmful Chemicals Found In Food
It's getting close to New Years and many people are starting to think about how to lose those extra pounds they managed to gain over the holidays. There are many sorts of diets and fads that have developed over the years from cutting carbs to cutting protein. Everyone has their own opinion as to...
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Varieties of garnet minerals
The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...
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Protein Design: Automated protein discovery and synthesis
In this paper I describe (theoretically) the method(s) of automated protein discovery and synthesis.
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Substance
Any kind of matter all specimens of which have the same chemical composition and physical properties.
Mother Nuclide
Nuclide that undergoes nuclear decay.
Carbanion
An organic ion carrying a negative charge on a carbon atom.
Formula
Combination of symbols that indicates the chemical composition of a substance.
xylidine
Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.
Semipermable Membrane
A thin partition between two solutions through which certain molecules can pass but others cannot.
Vapor
A gas formed by boiling or evaporating a liquid.
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| General Chemistry Online - Rich resource for students and teachers of introductory chemistry. Includes interactive course guides and tutorials, an exam survival guide, reference tables, self-grading quizzes and exams, a searchable glossary, a question and answer board, answers to over 300 frequently asked questions, and a chemical trivia quiz. |
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| Chemistry & Environmental Dictionary - Contains definitions for many chemistry, environmental and other related technical terms and acronyms. |
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Greenhouse Effect
Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.
Hard Water
Water containing Fe3+, Ca2+, and Mg2+ ions, which forms precipates with soap.
