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The amount of heat required to raise the temperature of one gram of substance one degree Celsius.

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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.

Essential Oil

A plant extract that has a distinctive odour or flavour.

Why do copper products change color, and what is the name of the process?

Probably, every person wants to know, why over time the copper turns green and becomes bloomed. This is easy to explain: that film is called patina.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Galvanizing

Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.

 

Solvation

The process by which solvent molecules surround and interact with solute ions or molecules.

Bonding Pair

Pair of electrons involved in a covalent bond.

xylan

The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

Domain

A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

Degenerate

Of the same energy.