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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.

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    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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    The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...

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Cell Potential

Potential difference, Ecell, between oxidation and reduction half-cells under nonstandard conditions.

 

Carcinogen

A substance capable of causing or producing cancer in mammals.

 

Heat of Condensation

The amount of heat that must be removed from one gram of a vapor at it's condensation point to condense the vapour with no change in temperature.

Amphiprotism

Ability of a substance to exhibit amphiprotism by accepting donated protons.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Crystal Lattice

A pattern of arrangement of particles in a crystal.

Gas of rotten eggs

If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.

Chemical Periodicity

The variations in properties of elements with their position in the periodic table.

Open Sextet

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

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.