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A negative ion, an atom or goup of atoms that has gained one or more electrons.

 

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  • 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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    Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...

  • 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...

  • Interesting facts about metals

    Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.

  • Protein Design: Automated protein discovery and synthesis

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Extensive Property

A property that depends upon the amount of material in a sample.

Heat of Crystallization

The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.

Electrolysis

Process that occurs in electrolytic cells.

Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Free Radical

A highly reactive chemical species carrying no charge and having a single unpaired electron in an orbital.

Linkage Isomers

Isomers in which a particular ligand bonds to a metal ion through different donor atoms.

 

Saponification

Hydrolysis of esters in the presence of strong soluable bases.

Matter

Anything that has mass and occupies space.

Octahedral

A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.

Photochemical Smog

A brownish smog occurring in urban areas receiving large amounts of sunlight, caused by photochemical (light-induced) reactions among nitrogen oxides, hydrocarbons and other components of polluted air that produce photochemical oxidants.