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A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

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Unsaturated Hydrocarbons

Hydrocarbons that contain double or triple carbon-carbon bonds.

Ester

A Compound of the general formula R-C-O-R1 where R and R1 may be the same or different, and may be either aliphatic or aromatic.

Lewis Acid

Any species that can accept a share in an electron pair.

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.

Open Sextet

Refers to species that have only six electrons in the highest energy level of the central element (many Lewis acids).

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

Dipole

Refers to the separation of charge between two covalently bonded atoms.

Single Bond

Covalent bond resulting from the sharing of two electrons (one pair) between two atoms.

Hydrophilic Colloids

Colloidal particles that repel water molecules.

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