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An inhibitor, a catalyst that decreases the rate of reaction.

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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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    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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    Chemistry can teach us about the composition of celestial bodies and determine their age.

  • The most expensive metal in the world

    Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.



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Boron Hydrides

Binary compounds of boron and hydrogen.

Energy

The capacity to do work or transfer heat.

Heterocyclic Amine

Amine in which the nitrogen is part of a ring.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Reversible Reaction

Reactions that do not go to completion and occur in both the forward and reverse direction.

Biodegradability

The ability of a substance to be broken down into simpler substances by bacteria.

 

xenon trioxide

A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

Photochemical Oxidants

Photochemically produced oxidizing agents capable of causing damage to plants and animals.

Emulsifying Agent

A sustance that coats the particles of the dispersed phase and prevents coagulation of colloidal particles, an emulsifier.

Valence Bond Theory

Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.