Star InactiveStar InactiveStar InactiveStar InactiveStar Inactive

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

Latest Articles

  • Ozone

    We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.

  • 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.

  • 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.

  • Use of diamonds

    Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...

  • Creating Malachite egg

    One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...

Most Popular

Molecular Orbital

An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.

Wild patina, is it so bad?

Usually this kind of patina appears on monuments. The most striking example is the Statue of Liberty in New York.

Aufbau ('building up') Principle

Describes the order in which electrons fill orbitals in atoms.


Vaporization of a liquid below its boiling point.


Homogeneous mixture of two or more substances.


The concept in which two or more equivalent dot formulas for the same arrangement of atoms (resonance structures) are necessary to describe the bonding in a molecule or ion.

Potential Energy

Energy that matter possesses by virtue of its position, condition or composition.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

Dynamic Equilibrium

An equilibrium in which processes occur continuously, with no net change. When two (or more) processes occur at the same rate so that no net change occurs.