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A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.

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  • 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...

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    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.

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Supercritical Fluid

A substance at temperature above its critical temperature.

Turning iron nail into copper nail

This simple chemical experiment shows the so-called process of copper plating of metal products. Copper has the ability to deposit on a metal surface.

Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.

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PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Binary Compound

A compound consisting of two elements, may be ionic or covalent.

Boiling Point Elevation

The increase in the boiling point of a solvent caused by the dissolution of a nonvolatile solute.

Atom

The smallest particle of an element.

History of diamonds

Diamond has been known for about 5 thousand years. Historians suggest that it was first discovered in India in river placers. It has long been credited with magical properties, and the largest famous crystals and products from them are shrouded in a halo of mystical legends.