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A device used to measure the heat transfer between system and surroundings.

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

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    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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    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...

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Most Popular

Solvation

The process by which solvent molecules surround and interact with solute ions or molecules.

Condensation

Liquefaction of vapor.

Thermonuclear Energy

The energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity. In these processes a small amount of mass is converted to energy according to the relationship E = mc2, where E is energy, m is mass, and c is the speed of light.

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

Hydrogen-Oxygen Fuel Cell

Fuel cell in which hydrogen is the fuel (reducing agent) and oxygen is the oxidizing agent.

 

Photochemical Smog

A brownish smog occurring in urban areas receiving large amounts of sunlight, caused by photochemical (light-induced) reactions among nitrogen oxides, hydrocarbons and other components of polluted air that produce photochemical oxidants.

 

Meniscus

The shape assumed by the surface of a liquid in a cylindrical container.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.

 

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Capillary

A tube having a very small inside diameter.