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The temperature at which liquid and solid coexist in equilibrium, also the freezing point.

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Native State

Refers to the occurrence of an element in an uncombined or free state in nature.

 

Solvent

The dispersing medium of a solution.

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.

Liquid Aerosol

Colloidal suspension of liquid in gas.

Haber Process

A process for the catalyzed industrial production of ammonia from N2 and H2 at high temperature and pressure.

Aryl Group

Group of atoms remaining after a hydrogen atom is removed from the aromatic system.

Sigma Bonds

Bonds resulting from the head-on overlap of atomic orbitals, in which the region of electron sharing is along and (cylindrically) symmetrical to the imaginary line connecting the bonded atoms.

Canal Ray

Stream of positively charged particles (cations) that moves toward the negative electrode in cathode ray tubes, observed to pass through canals in the negative electrode.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).