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Specific distribution of electrons in atomic orbitals of atoms or ions.

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xylan

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

Film badge

A small patch of photographic film worn on clothing to detect and measure accumulated incident ionizing radiation.

Surface Tension

It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.

Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.

Law of Conservation of Matter and Energy

The total amount of matter and energy available in the universe is fixed.

Quantum Numbers

Numbers that describe the energies of electrons in atoms, derived from quantum mechanical treatment.

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.

Leveling Effect

Effect by which all acids stronger than the acid that is characteristic of the solvent react with solvent to produce that acid, similar statement applies to bases. The strongest acid (base) that can exist in a given solvent is the acid (base) characteristic of the solvent.

Hydrometer

A device used to measure the densities of liquids and solutions.

Daughter Nuclide

Nuclide that is produced in a nuclear decay.